Acid-Base & Blood Gas 14
- A-a Gradient CalculatorCalculate the alveolar-arterial oxygen gradient to distinguish hypoxaemia from V/Q mismatch or shunt from hypoxaemia caused…
- Albumin-Corrected Anion Gap CalculatorCorrect the anion gap for hypoalbuminaemia, which lowers the measured gap and can hide a clinically…
- Alveolar Gas Equation Calculator (PAO₂)Calculate alveolar pO₂ from FiO₂, PaCO₂, atmospheric pressure and respiratory quotient — the reference value the…
- Anion Gap CalculatorCalculate the serum anion gap from sodium, chloride and bicarbonate — with the interval that belongs…
- Arterial Oxygen Content (CaO₂) CalculatorCalculate CaO₂ from haemoglobin, saturation and pO₂ — and see why anaemia costs far more oxygen…
- Bicarbonate Deficit CalculatorEstimate the bicarbonate needed to reach a target level, and see why bicarbonate replacement remains a…
- Delta Ratio Calculator (Delta Gap)Classify a high-anion-gap acidosis as pure or mixed by comparing the rise in the anion gap…
- Henderson-Hasselbalch CalculatorCalculate pH from bicarbonate and pCO₂ using the equation blood gas analysers themselves rely on.
- Lactate Unit ConverterConvert blood lactate between mg/dL, mmol/L, µmol/L and mg/L, with the 2 and 4 mmol/L thresholds,…
- Oxygen Delivery (DO₂) CalculatorCalculate DO₂ from oxygen content and cardiac output, and see why chasing a supranormal target does…
- PaO₂/FiO₂ (P/F) Ratio CalculatorCalculate the P/F ratio, the oxygenation criterion in the Berlin definition of ARDS severity.
- pCO₂ Unit Converter (mmHg to kPa)Convert arterial pCO₂ from mmHg to kPa, using the same factor as pO₂, with the type…
- pO₂ Unit Converter (mmHg to kPa)Convert arterial pO₂ from mmHg to kPa — the commonest source of confusion when reading a…
- Winter’s Formula CalculatorCheck whether the measured pCO₂ shows appropriate respiratory compensation for a metabolic acidosis, or a second…
Adrenal & Steroid Hormones 8
- Aldosterone Unit ConverterConvert plasma aldosterone between ng/dL, pg/mL and pmol/L, with the posture, sodium intake and drug-preparation rules…
- Aldosterone-Renin Ratio (ARR) CalculatorScreen for primary aldosteronism from plasma aldosterone and plasma renin activity, and see why the ratio…
- Corticosteroid Equivalent Dose CalculatorConvert a corticosteroid dose to another agent's equivalent using relative glucocorticoid potency — and see why…
- Cortisol Unit ConverterConvert serum cortisol between µg/dL, nmol/L and ng/mL, and see why the sampling time and the…
- Dexamethasone Suppression Test InterpreterInterpret the 08:00 cortisol after a 1 mg overnight dexamethasone suppression test, using both the traditional…
- DHEA-Sulfate Unit ConverterConvert DHEA-sulfate between µg/dL, µg/mL and µmol/L, and see why it separates an adrenal from an…
- Plasma Metanephrine Unit ConverterConvert plasma free metanephrine between pg/mL, ng/L and pmol/L, and see why the sample must be…
- Plasma Normetanephrine Unit ConverterConvert plasma free normetanephrine between pg/mL, ng/L and pmol/L, and see why it is more posture-sensitive…
Amino Acids, Metabolic & Newborn Screening 6
- Ammonia Interpretation CalculatorGrade plasma ammonia by age group and severity, and see why sampling technique matters as much…
- Anion Gap Acidosis Cause IdentifierScreen a raised anion gap against lactate, ketones and the osmolal gap to narrow the cause…
- Fischer Ratio CalculatorCalculate the Fischer ratio of branched-chain to aromatic amino acids, used to assess hepatic encephalopathy risk…
- Homocysteine Unit ConverterConvert homocysteine between mg/L, µg/mL and µmol/L, and see why a raised result points more often…
- Methylmalonic Acid (MMA) Unit ConverterConvert methylmalonic acid between µmol/L and nmol/L — the single most useful confirmatory test for functional…
- Phenylalanine to Tyrosine Ratio CalculatorCalculate the phenylalanine to tyrosine ratio used to confirm phenylketonuria on newborn screening, and see when…
Blood Bank & Transfusion Medicine 8
- ABC Score for Massive Transfusion CalculatorFour bedside items, available within minutes of arrival and needing no laboratory result, that predict whether…
- Anti-D Immunoglobulin Dose CalculatorCalculate the anti-D dose for a measured fetomaternal haemorrhage under either convention. The UK figure is…
- Corrected Count Increment (CCI) CalculatorWork out whether a platelet transfusion actually worked. Enter counts in the unit your laboratory reports…
- Crossmatch to Transfusion Ratio CalculatorThe oldest measure of blood ordering efficiency, with the transfusion probability alongside it. A ratio above…
- Estimated Blood Volume Calculator (Nadler)Estimate total blood volume from height, weight and sex using Nadler's equations — the standard for…
- Kleihauer–Betke Fetal Bleed CalculatorConvert a Kleihauer acid-elution percentage into the volume of a fetomaternal haemorrhage — reported as fetal…
- Neonatal Exchange Transfusion Volume CalculatorCalculate the volume for a double-volume exchange transfusion in a term or preterm baby, and see…
- Red Cell Transfusion Volume CalculatorCalculate the packed red cell volume needed to raise haemoglobin to a target, and the rate…
Bone & Mineral Metabolism 9
- Calcium Unit ConverterConvert total calcium between mg/dL, mmol/L, mEq/L and mg/L — and get the divalent step right,…
- Calcium-Creatinine Clearance Ratio CalculatorSeparate familial hypocalciuric hypercalcaemia from primary hyperparathyroidism using the 24-hour calcium-creatinine clearance ratio.
- Corrected Calcium CalculatorAdjust total serum calcium for a low albumin using the traditional correction formula, and see why…
- Elemental Calcium Content ConverterConvert a calcium salt dose to its elemental calcium content — the figure that dosing guidelines…
- Parathyroid Hormone (PTH) Unit ConverterConvert intact PTH between pg/mL, pmol/L and ng/L, and see why a PTH from one laboratory…
- Phosphate Unit ConverterConvert serum phosphate between mg/dL, mmol/L and mg/L — and see why the factor uses the…
- Potassium Salt (mEq, mmol, mg) ConverterConvert a potassium salt dose in milligrams to mmol (equal to mEq for this monovalent ion),…
- TmP/GFR Calculator (Renal Phosphate Threshold)Calculate the renal tubular maximum phosphate reabsorption threshold (TmP/GFR) using the Walton-Bijvoet formula, the most sensitive…
- Vitamin D IU to mcg ConverterConvert vitamin D doses between international units and micrograms, and see how dosing relates to the…
CSF & Body Fluid Analysis 6
- CSF Albumin Quotient (Q-Albumin) CalculatorCalculate Q-albumin, the single best measure of blood-CSF barrier integrity, from CSF and serum albumin.
- CSF IgG Index CalculatorCalculate the CSF IgG index to detect intrathecal immunoglobulin synthesis, correcting for blood-brain barrier permeability.
- CSF Protein Unit ConverterConvert CSF total protein between mg/dL and mg/L, with reference ranges by site and age and…
- Light’s Criteria Calculator (Pleural Effusion)Classify a pleural effusion as exudate or transudate from paired pleural and serum protein and LDH…
- Serum-Ascites Albumin Gradient (SAAG) CalculatorCalculate the serum-ascites albumin gradient, the test that has replaced the transudate/exudate split for classifying ascites.
- Traumatic Tap WBC Correction CalculatorCorrect a CSF white cell count for blood contamination from a traumatic tap, using the patient's…
Cardiac Markers 7
- BNP Unit ConverterConvert BNP between pg/mL, ng/L and pmol/L, and see why BNP and NT-proBNP are different molecules…
- HEART Score CalculatorRisk-stratify chest pain in the emergency department from history, ECG, age, risk factors and troponin.
- High-Sensitivity Troponin Delta CalculatorCalculate the percentage change between two hs-troponin results, and see why guidelines define a significant delta…
- hs-CRP Cardiovascular Risk CalculatorClassify cardiovascular risk from high-sensitivity CRP using the AHA/CDC categories, and see when the result is…
- NT-proBNP Unit ConverterConvert NT-proBNP between pg/mL, ng/L and pmol/L, with age-stratified thresholds and why it is the marker…
- TIMI Risk Score Calculator (NSTEMI/UA)Risk-stratify unstable angina and NSTEMI from seven bedside items, and see why GRACE has largely superseded…
- Troponin I Unit Converter0.04 ng/mL and 40 ng/L are the same result. Convert cardiac troponin I between ng/L, pg/mL,…
Chemistry & Electrolytes 21
- Adrogué-Madias Formula CalculatorPredict the change in serum sodium from one litre of a chosen infusate, using the Adrogué-Madias…
- Albumin Unit ConverterConvert albumin between g/dL, g/L and µmol/L, and see why a low albumin marks the severity…
- Amylase Unit ConverterConvert serum amylase between U/L, IU/L, µkat/L and nkat/L, and see why a normal amylase does…
- Bicarbonate Unit ConverterConvert bicarbonate between mmol/L, mEq/L and mg/dL. Bicarbonate is monovalent, so mmol/L and mEq/L are the…
- Calcium-Phosphate Product CalculatorCalculate the calcium-phosphate product, a legacy marker of vascular calcification risk in chronic kidney disease.
- Calculated Serum Osmolality CalculatorCalculate serum osmolality from sodium, glucose, BUN and ethanol to compare against the measured value and…
- Ceruloplasmin Unit ConverterConvert ceruloplasmin between mg/dL, g/L, mg/L and µmol/L, and see why a normal level does not…
- Chloride Unit ConverterConvert chloride between mmol/L, mEq/L and mg/dL. Chloride is monovalent, so mmol/L and mEq/L are the…
- Cholinesterase Unit ConverterConvert plasma (pseudo)cholinesterase between U/L, IU/L, µkat/L and nkat/L, and keep it separate from the red-cell…
- Creatine Kinase (CK) Unit ConverterConvert creatine kinase between U/L, IU/L, µkat/L and nkat/L, with the statin and rhabdomyolysis thresholds and…
- Free Water Deficit CalculatorCalculate the free water deficit in hypernatraemia from body weight, measured sodium and total body water…
- Globulin and A:G Ratio CalculatorCalculate globulin as total protein minus albumin, with the A:G ratio and what a reversed ratio…
- Lactate Dehydrogenase (LDH) Unit ConverterConvert LDH between U/L, IU/L, µkat/L and nkat/L — and start with the fact that haemolysing…
- Lipase Unit ConverterConvert serum lipase between U/L, IU/L, µkat/L and nkat/L, with the three-times-upper-limit diagnostic threshold and why…
- Magnesium Unit ConverterMagnesium is divalent: mEq/L is exactly twice mmol/L, and mg/dL is a different scale again. Convert…
- Potassium Unit ConverterConvert potassium between mmol/L, mEq/L and mg/dL. Potassium is monovalent, so mmol/L and mEq/L are the…
- Sodium Correction for HyperglycaemiaCorrect measured sodium for the diluting effect of hyperglycaemia, using either the Katz or Hillier factor.
- Sodium Deficit CalculatorCalculate the sodium deficit in hyponatraemia between a measured and target sodium, with correction rate limits.
- Sodium Unit ConverterConvert sodium between mmol/L, mEq/L and mg/dL. Sodium is monovalent, so mmol/L and mEq/L are the…
- Total Protein Unit ConverterConvert serum total protein between g/dL, g/L and mg/dL — and use it the way it…
- Uric Acid (Urate) Unit ConverterConvert urate between mg/dL, µmol/L and mmol/L — and keep two different numbers apart: the sex-specific…
Coagulation & Thrombosis 14
- 4Ts Score for HIT CalculatorScore the four Ts for heparin-induced thrombocytopenia. A low score carries a negative predictive value of…
- Age-Adjusted D-Dimer CalculatorApply the age-adjusted D-dimer cut-off — age × 10 µg/L FEU above age 50 — to…
- aPTT Ratio CalculatorExpress a patient aPTT against your laboratory's mean normal as a ratio — the only form…
- CHA₂DS₂-VASc and CHA₂DS₂-VA Score CalculatorStroke risk in atrial fibrillation on either convention. The 2024 ESC guideline dropped the sex category…
- D-Dimer FEU to DDU ConverterConvert D-dimer between fibrinogen equivalent units and D-dimer units — two incompatible reporting systems that, confused,…
- Fibrinogen Unit ConverterConvert fibrinogen between g/L, mg/dL and µmol/L, with the replacement thresholds and the reason a Clauss…
- HAS-BLED Score CalculatorBleeding risk on anticoagulation for atrial fibrillation, with the two doubled letters scored properly. A high…
- INR Calculator (from PT and ISI)Convert a patient's prothrombin time into an INR using the laboratory's mean normal PT and the…
- ISTH DIC Score CalculatorThe 2025 ISTH overt DIC score, with the explicit 3× and 7× upper-limit multiples that replaced…
- Padua Prediction Score CalculatorVenous thromboembolism risk in hospitalised medical patients. Four items score 3 points each, so the threshold…
- PERC Rule CalculatorApply the Pulmonary Embolism Rule-out Criteria to avoid any further testing — not even a D-dimer…
- Simplified PESI (sPESI) CalculatorPrognosis after a confirmed pulmonary embolism, not diagnosis of one. Six items, one point each —…
- Wells Score for DVT CalculatorEstimate the clinical probability of deep vein thrombosis with the Wells score, using the two-level DVT-unlikely…
- Wells Score for PE CalculatorEstimate the clinical probability of pulmonary embolism with the Wells score, using the two-level PE-unlikely /…
Diabetes, Glucose & Insulin Resistance 20
- Beta-Hydroxybutyrate Unit ConverterConvert beta-hydroxybutyrate between mg/dL, mmol/L and mg/L, with the DKA thresholds and why urine ketones can…
- C-Peptide to Insulin Molar Ratio CalculatorMolar C-peptide divided by molar insulin, both in pmol/L. The pancreas secretes them in equal amounts,…
- C-Peptide Unit ConverterConvert C-peptide between ng/mL, µg/L, nmol/L and pmol/L, and read it the way it has to…
- CSF to Serum Glucose Ratio CalculatorCalculate the CSF:serum glucose ratio, a more reliable pointer to bacterial meningitis than the absolute CSF…
- Estimated Glucose Disposal Rate (eGDR) CalculatorEstimate insulin sensitivity in type 1 diabetes from waist circumference, hypertension and HbA1c — the surrogate…
- Glucose Management Indicator (GMI) CalculatorCalculate GMI from mean CGM glucose, the term that replaced "estimated A1C" for continuous glucose monitoring…
- Glucose Unit ConverterConvert blood glucose between mg/dL, mmol/L and g/L, with the diagnostic thresholds in both units and…
- Glycated Albumin ConverterConvert glycated albumin to an estimated HbA1c, and see when GA is more reliable than HbA1c…
- HbA1c NGSP to IFCC ConverterConvert HbA1c between the NGSP/DCCT percentage and the IFCC mmol/mol unit, with the thresholds that matter…
- HbA1c to Estimated Average Glucose ConverterConvert HbA1c to an estimated average glucose using the ADAG regression, and see how wide the…
- HOMA-B CalculatorEstimate beta-cell function from fasting glucose and insulin, with the derivation of the 360 and 63…
- HOMA-IR CalculatorCalculate HOMA-IR from fasting glucose and insulin, with the derivation of the 405 divisor and an…
- Insulin Unit ConverterConvert insulin from µIU/mL to pmol/L using the correct factor of 6.00 — not the 6.945…
- Insulinogenic Index CalculatorMeasure early-phase insulin secretion during an OGTT — one of the earliest detectable defects on the…
- Matsuda Index CalculatorEstimate whole-body insulin sensitivity from a standard 75 g oral glucose tolerance test, combining fasting and…
- METS-IR CalculatorA clamp-validated, insulin-free index of insulin resistance built from glucose, triglycerides, BMI and HDL cholesterol.
- QUICKI CalculatorThe quantitative insulin sensitivity check index, from fasting insulin in µIU/mL and fasting glucose in mg/dL…
- Triglyceride-Glucose (TyG) Index CalculatorEstimate insulin resistance from two routine fasting values — triglycerides and glucose — with no insulin…
- TyG-BMI Index CalculatorCombine the TyG index with body mass index for a closer surrogate of clamp-measured insulin resistance…
- Whole Blood to Plasma Glucose ConverterConvert whole blood glucose to plasma-equivalent mg/dL, and check whether your meter has already applied this…
Haematology — Red Cell & Indices 9
- Absolute Reticulocyte Count CalculatorConvert a reticulocyte percentage into an absolute count in ×10⁹/L — the number that tells you…
- Corrected Reticulocyte Count CalculatorCorrect the reticulocyte percentage for anaemia by scaling it to a reference haematocrit of 45%, so…
- Haematocrit from Haemoglobin CalculatorEstimate the haematocrit as three times the haemoglobin — the rule of three — and see…
- Haemoglobin Unit ConverterConvert haemoglobin between g/dL, g/L and mmol/L — using the globin monomer mass, which is why…
- MCH Calculator (Mean Corpuscular Haemoglobin)Calculate mean corpuscular haemoglobin from haemoglobin and red cell count, and see why it usually tracks…
- MCHC Calculator (Mean Corpuscular Haemoglobin Concentration)Calculate MCHC from haemoglobin and haematocrit, and learn why a genuinely high result is rare enough…
- MCV Calculator (Mean Corpuscular Volume)Calculate mean corpuscular volume from haematocrit and red cell count, and read the microcytic-normocytic-macrocytic split correctly.
- Mentzer Index CalculatorScreen a microcytic anaemia toward thalassaemia trait or iron deficiency using MCV and red cell count,…
- Reticulocyte Production Index (RPI) CalculatorCalculate the RPI by correcting the reticulocyte count for both anaemia and the longer circulating lifespan…
Haematology — White Cell & Inflammatory Ratios 11
- Absolute Eosinophil Count (AEC) CalculatorTurn a white cell count and an eosinophil percentage into the absolute eosinophil count, and read…
- Absolute Lymphocyte Count (ALC) CalculatorTurn a white cell count and a lymphocyte percentage into the absolute lymphocyte count, and read…
- Absolute Monocyte Count (AMC) CalculatorTurn a white cell count and a monocyte percentage into the absolute monocyte count — and…
- Absolute Neutrophil Count (ANC) CalculatorConvert a white cell count and differential into the absolute neutrophil count, and read the neutropenia…
- Corrected White Cell Count for Nucleated Red CellsAutomated analysers count nucleated red cells as white cells, so a marrow-stressed sample reports a falsely…
- Lymphocyte-Monocyte Ratio (LMR) CalculatorCalculate the lymphocyte-monocyte ratio — and read the honest caveat with it. There is no reference…
- Neutropenia Severity Grading InterpreterGrade neutropenia by absolute neutrophil count. First, the thing that matters more than the grade: a…
- Neutrophil-Lymphocyte Ratio (NLR) CalculatorCalculate the neutrophil-lymphocyte ratio and read it as what it is — a broad stress marker,…
- Platelet-Lymphocyte Ratio (PLR) CalculatorCalculate the platelet-lymphocyte ratio, another broad inflammatory marker with the same caveats as NLR.
- Systemic Immune-Inflammation Index (SII) CalculatorCalculate SII from platelets, neutrophils and lymphocytes — and see why no single cut-off applies across…
- White Blood Cell Count ConverterConvert a white cell count between ×10⁹/L, ×10³/µL, K/µL, cells/µL and cells/mm³ — and see why…
Immunology, Autoantibodies & Complement 14
- Age-Adjusted ESR Upper Limit CalculatorCalculate the age- and sex-adjusted upper limit of normal for the erythrocyte sedimentation rate using Miller's…
- Alpha-1 Antitrypsin Unit ConverterConvert alpha-1 antitrypsin between mg/dL, g/L, mg/L and µmol/L, with the protective threshold and why an…
- ANA Titre ConverterConvert doubling dilutions past 1:40 into a reciprocal ANA titre, and see when a change actually…
- Antistreptolysin O (ASO) Unit ConverterIU/mL and U/mL are the same number and IU/L is a thousand times larger — so…
- Beta-2 Microglobulin Unit ConverterConvert beta-2 microglobulin between mg/L, µg/mL and nmol/L, with the ISS myeloma thresholds and why renal…
- Coeliac Serology InterpreterInterpret anti-tTG IgA, total IgA and EMA together, and see why a gluten-free diet before testing…
- Complement C3 Unit ConverterConvert complement C3 between g/L, mg/dL and mg/L, and read it the way it should be…
- CRP Unit ConverterConvert C-reactive protein between mg/L, mg/dL and µg/mL, and see why the tenfold difference between the…
- DAS28-CRP CalculatorCalculate DAS28-CRP for rheumatoid arthritis disease activity, and see the joints and biases it does not…
- Immunoglobulin A (IgA) Unit ConverterConvert IgA between g/L, mg/dL and mg/L — and check it before you trust a coeliac…
- Immunoglobulin G (IgG) Unit ConverterConvert IgG between g/L, mg/dL and mg/L, and see why a raised total cannot tell a…
- ISS Myeloma Staging CalculatorStage newly diagnosed multiple myeloma from beta-2 microglobulin and albumin, and see how R-ISS builds on…
- Serum Free Light Chain Ratio CalculatorCalculate the kappa:lambda free light chain ratio, and see why the normal range shifts in renal…
- Total IgE Unit ConverterConvert total IgE between kU/L, IU/mL and ng/mL, and see why the number is a poor…
Infectious Disease & Sepsis Labs 13
- CURB-65 Score CalculatorScore community-acquired pneumonia severity from five bedside criteria, and see what the score deliberately leaves out.
- HBV DNA IU/mL to Copies/mL ConverterConvert HBV DNA between IU/mL and copies/mL using an assay-specific factor, and see the log value…
- Hepatitis B Serology InterpreterTurn HBsAg, anti-HBs and anti-HBc results into a plain-English pattern — one of the most confusing…
- Malaria Parasitaemia CalculatorCalculate percentage parasitaemia from a thin film count, and see why every level — not just…
- NEWS2 Score CalculatorAggregate seven routine observations into the standard ward early-warning score, and the single-parameter rule that overrides…
- Procalcitonin InterpreterRead a procalcitonin result against the bacterial-infection thresholds used in antibiotic stewardship, and see where it…
- qSOFA Score CalculatorFlag suspected infection at higher risk of death or prolonged critical care using three bedside observations…
- Shock Index CalculatorDivide heart rate by systolic blood pressure to catch compensated shock earlier than either number does…
- SIRS Criteria CalculatorScreen for the systemic inflammatory response — four bedside-and-lab criteria that once defined sepsis and are…
- SOFA Score CalculatorScore organ dysfunction across six systems — the score whose 2-point rise, with suspected infection, is…
- Tuberculin Skin Test (Mantoux) InterpreterApply the correct induration threshold for the patient's risk group, from 5 mm in the highest-risk…
- Viral Load Log Change CalculatorTurn two viral load results into a log₁₀ change, and see how much of that change…
- Viral Load Log ConverterConvert an absolute viral load in copies/mL or IU/mL to its base-10 logarithm, and see what…
Iron Studies 23
- Elemental Iron in Oral Iron Salts ConverterConvert the tablet strength printed on an oral iron pack into the elemental iron it actually…
- Erythropoietin (EPO) Unit ConverterConvert erythropoietin between mIU/mL, IU/L and mIU/L, with the adult reference interval and what a high…
- Ferric Carboxymaltose Dose CalculatorWork out the cumulative ferric carboxymaltose dose from body weight and haemoglobin using the simplified label…
- Ferritin Correction for Inflammation CalculatorApply the right ferritin threshold for a patient with raised CRP, where the usual 30 µg/L…
- Ferritin Unit ConverterConvert serum ferritin between ng/mL, µg/L, µg/dL, nmol/L and pmol/L, and see instantly whether the value…
- Functional vs Absolute Iron Deficiency InterpreterDistinguish empty iron stores from iron that is present but locked away, using ferritin, transferrin saturation…
- Haptoglobin Unit ConverterConvert haptoglobin between mg/dL, g/L and mg/L, with the adult reference interval and what a low…
- Hepcidin Unit ConverterConvert hepcidin-25 between ng/mL, µg/L, nmol/L and pmol/L, with a note on why reference ranges are…
- Iron (Fe) Unit ConverterConvert serum iron between µg/dL, µg/L, mg/L and µmol/L, with adult reference intervals for men and…
- Iron Deficiency Staging InterpreterPlace a patient on the spectrum from depleted stores through iron-deficient erythropoiesis to frank iron deficiency…
- Iron Deficit (Ganzoni Formula) CalculatorCalculate the total iron deficit in milligrams from body weight and haemoglobin, the standard basis for…
- Iron Studies Panel InterpreterEnter a full iron panel — ferritin, serum iron, TIBC and CRP — and get the…
- Iron Sucrose Dose and Schedule CalculatorConvert a total iron requirement into the number of iron sucrose infusions needed, at the standard…
- Liver Iron Concentration (LIC) InterpreterGrade hepatic iron loading from an MRI R2* or biopsy liver iron concentration, and see the…
- Soluble Transferrin Receptor (sTfR) Unit ConverterConvert soluble transferrin receptor between mg/L, µg/mL and nmol/L, with the caveat that reference ranges are…
- sTfR-Ferritin Index CalculatorSeparate iron deficiency from anaemia of inflammation using the ratio of soluble transferrin receptor to the…
- TIBC from Transferrin CalculatorEstimate total iron binding capacity from a measured transferrin concentration when your laboratory reports one but…
- Total Iron Binding Capacity (TIBC) Unit ConverterConvert TIBC between µg/dL, µg/L and µmol/L, and see where the value sits against the adult…
- Transferrin from TIBC CalculatorEstimate transferrin concentration from a reported TIBC, for guidelines and drug labels written in terms of…
- Transferrin Saturation (TSAT) CalculatorCalculate transferrin saturation from serum iron and TIBC, and read it against the thresholds for iron…
- Transferrin Unit ConverterConvert transferrin between mg/dL, g/L, mg/L and µmol/L, with adult reference intervals.
- UIBC from TIBC and Iron CalculatorDerive unsaturated iron binding capacity from TIBC and serum iron, or check that a reported set…
- Unsaturated Iron Binding Capacity (UIBC) Unit ConverterConvert UIBC between µg/dL, µg/L and µmol/L, and see the value against the adult reference interval.
Lab Utilities, Dilutions & Unit Tools 12
- C1V1 = C2V2 Dilution CalculatorWork out how much stock solution to take for a given final concentration and volume —…
- Centrifuge RCF to RPM CalculatorConvert a required force in × g into the rotor speed to dial up on your…
- Centrifuge RPM to RCF CalculatorConvert rotor speed in revolutions per minute to relative centrifugal field in × g, using your…
- Enzyme Activity Unit ConverterConvert catalytic activity between U/L, IU/L, mU/mL, U/mL, µkat/L and nkat/L — and see why the…
- Haemocytometer Cell Count CalculatorConvert a manual count from an Improved Neubauer chamber into cells per millilitre, allowing for the…
- Laboratory Temperature ConverterConvert between Celsius, Fahrenheit and kelvin, with the storage and incubation temperatures a laboratory actually runs…
- mEq to mmol to mg ConverterConvert milliequivalents to millimoles and to milligrams for any ion, using its atomic or molecular weight…
- Molarity CalculatorCalculate the molar concentration of a solution from the mass weighed out, the formula weight on…
- Parts Per Million (ppm) ConverterConvert between ppm, ppb, mg/L, µg/mL, µg/L and per cent — and see where the familiar…
- Percent Solution CalculatorWork out the percentage strength of a solution as % w/v, % v/v or % w/w…
- Pressure Unit Converter for Lab and Clinical UseConvert mmHg, kPa, cmH2O, atmospheres, bar and psi through the pascal, with the exact definitions and…
- Serial Dilution CalculatorFind the concentration at the end of a serial dilution series, and see how quickly the…
Lipids & Cardiovascular Risk Labs 16
- ApoB/ApoA-1 Ratio CalculatorDivide apolipoprotein B by apolipoprotein A-1 for the single most informative number the two tests produce…
- Apolipoprotein A-1 (ApoA-1) Unit ConverterConvert apolipoprotein A-1 between g/L, mg/dL and mg/L. It is the HDL counterpart of apoB, and…
- Apolipoprotein B (ApoB) Unit ConverterConvert apolipoprotein B between g/L, mg/dL and mg/L — and read the answer against the right…
- Atherogenic Index of Plasma (AIP) CalculatorAIP is log₁₀ of triglycerides divided by HDL cholesterol, with both in mmol/L. Enter mg/dL instead…
- Cholesterol Unit ConverterConvert total, LDL and HDL cholesterol between mg/dL, mg/L, g/L and mmol/L — and see why…
- LDL Cholesterol Calculator (Friedewald)Estimate LDL cholesterol from total cholesterol, HDL and triglycerides using the Friedewald equation — and see…
- LDL Cholesterol Calculator (Sampson-NIH)Estimate LDL cholesterol with the NIH equation 2 of Sampson and colleagues — derived against beta-quantification…
- LDL Percent Reduction Needed CalculatorWork out the percentage LDL reduction between a current value and a target, and read it…
- LDL to HDL Ratio CalculatorDivide LDL cholesterol by HDL cholesterol for a unit-independent ratio — widely quoted, useful for explanation,…
- Lipoprotein(a) Unit ConverterConvert an Lp(a) in nmol/L to an approximate mg/dL — and see how far the answer…
- Non-HDL Cholesterol CalculatorSubtract HDL from total cholesterol to get the cholesterol carried in every atherogenic particle — a…
- Remnant Cholesterol CalculatorSubtract HDL and LDL from total cholesterol to get the cholesterol carried in triglyceride-rich lipoproteins and…
- Total Cholesterol to HDL Ratio CalculatorDivide total cholesterol by HDL cholesterol to get the Framingham risk ratio, read against sex-specific reference…
- Triglyceride to HDL Ratio CalculatorDivide triglycerides by HDL cholesterol in mg/dL as a surrogate for insulin resistance and small dense…
- Triglyceride Unit ConverterConvert triglycerides between mg/dL, mmol/L, g/L and mg/L — and see why the molar value is…
- VLDL Cholesterol CalculatorEstimate VLDL cholesterol as a fifth of the triglyceride concentration — the same assumption Friedewald rests…
Liver & Gastrointestinal 22
- ALBI Grade Calculator (Albumin-Bilirubin)Grade liver function from albumin and bilirubin alone — an objective alternative to Child-Pugh with no…
- Alkaline Phosphatase (ALP) Unit ConverterConvert alkaline phosphatase between U/L, IU/L, µkat/L and nkat/L, with adult ranges and the bone-versus-liver question.
- ALT (SGPT) Unit ConverterConvert alanine aminotransferase between U/L, IU/L, µkat/L and nkat/L, with the updated sex-specific upper limits.
- Ammonia (NH₃) Unit ConverterConvert plasma ammonia between µg/dL, µmol/L and µg/L, with the sampling rules that determine whether the…
- APRI Calculator (AST to Platelet Ratio Index)Estimate liver fibrosis from AST and platelet count alone — the simplest of the non-invasive fibrosis…
- AST (SGOT) Unit ConverterConvert aspartate aminotransferase between U/L, IU/L, µkat/L and nkat/L, and see why a raised AST is…
- AST/ALT Ratio (De Ritis Ratio) CalculatorCalculate the De Ritis ratio and read what its value suggests about the cause and stage…
- BARD Score CalculatorA three-item score that rules out advanced fibrosis in fatty liver disease from BMI, the AST/ALT…
- Bilirubin (Total) Unit ConverterConvert total bilirubin between mg/dL, µmol/L, mg/L and µg/dL, with adult reference ranges and jaundice thresholds.
- Child-Pugh Score CalculatorGrade the severity of chronic liver disease from bilirubin, albumin, INR, ascites and encephalopathy, and read…
- Direct (Conjugated) Bilirubin Unit ConverterConvert direct bilirubin between mg/dL, µmol/L, mg/L and µg/dL, and see whether the fraction points to…
- Fatty Liver Index (FLI) CalculatorEstimate the probability of hepatic steatosis from BMI, waist circumference, triglycerides and GGT — no imaging…
- FIB-4 Index CalculatorEstimate the likelihood of advanced liver fibrosis from age, AST, ALT and platelet count — the…
- Gamma-Glutamyl Transferase (GGT) Unit ConverterConvert gamma-glutamyl transferase between U/L, IU/L, µkat/L and nkat/L, with sex-specific ranges and what an isolated…
- Hepatic Steatosis Index (HSI) CalculatorEstimate hepatic steatosis from the ALT/AST ratio, BMI, sex and diabetes status — no waist measurement…
- Indirect (Unconjugated) Bilirubin CalculatorCalculate indirect bilirubin from total and direct, and see the conjugated fraction that determines the differential.
- Lille Model CalculatorDecide at day 7 whether corticosteroids are working in severe alcohol-related hepatitis, using the change in…
- Maddrey Discriminant Function CalculatorIdentify severe alcohol-related hepatitis, where a discriminant function of 32 or more is the conventional threshold…
- MELD 3.0 Score CalculatorCalculate the MELD 3.0 score used for liver transplant allocation, including the sex and albumin terms…
- MELD-Na Score CalculatorCalculate the sodium-adjusted MELD score used for liver allocation from 2016 until MELD 3.0 replaced it.
- NAFLD Fibrosis Score CalculatorEstimate advanced fibrosis in fatty liver disease from age, BMI, glycaemic status, AST/ALT ratio, platelets and…
- R-Factor Calculator (Liver Injury Pattern)Classify liver injury as hepatocellular, cholestatic or mixed from ALT and ALP relative to their upper…
Renal Function & eGFR 26
- BUN to Creatinine Ratio CalculatorCalculate the BUN:creatinine ratio, a quick pointer toward pre-renal, renal or other causes of an abnormal…
- CKD GFR Stage Calculator (G1–G5)Place an eGFR into its KDIGO G1–G5 category, and see why a normal-range result is not,…
- CKD-EPI 2021 Creatinine eGFR CalculatorEstimate GFR from creatinine, age and sex using the 2021 race-free CKD-EPI equation, the current standard…
- CKD-EPI 2021 Creatinine-Cystatin C eGFR CalculatorThe most accurate routine estimate of GFR, combining creatinine and cystatin C in the 2021 race-free…
- CKD-EPI Cystatin C eGFR CalculatorEstimate GFR from cystatin C alone, independent of muscle mass — useful when creatinine cannot be…
- Cockcroft-Gault Creatinine Clearance CalculatorEstimate creatinine clearance in mL/min — the equation most drug labels specify for renal dose adjustment.
- Creatinine Unit ConverterConvert serum creatinine between mg/dL and µmol/L, with adult reference ranges and what a change actually…
- Cystatin C Unit ConverterConvert cystatin C between mg/L, µg/mL and nmol/L, with reference ranges and when to prefer it…
- eGFR BSA Adjustment CalculatorConvert an indexed eGFR (mL/min/1.73 m²) to an absolute clearance in mL/min for drug dosing.
- Fractional Excretion of Magnesium (FEMg) CalculatorIdentify renal magnesium wasting as the cause of hypomagnesaemia, correcting for the fraction of serum magnesium…
- Fractional Excretion of Phosphate (FEPO4) CalculatorIdentify renal phosphate wasting as the cause of hypophosphataemia, where the expected response is near-complete tubular…
- Fractional Excretion of Potassium (FEK) CalculatorIn hypokalaemia, separate extrarenal potassium loss from inappropriate renal potassium wasting.
- Fractional Excretion of Sodium (FENa) CalculatorDistinguish a pre-renal pattern from intrinsic renal injury by comparing sodium clearance with creatinine clearance —…
- Fractional Excretion of Urea (FEUrea) CalculatorDistinguish pre-renal from intrinsic renal injury when diuretics have already been given, using urea instead of…
- Fractional Excretion of Uric Acid (FEUA) CalculatorHelp separate SIADH from volume depletion in hyponatraemia — a raised FEUA persists in SIADH even…
- KDIGO AKI Stage CalculatorStage acute kidney injury from a creatinine pair and urine output using the KDIGO criteria, taking…
- KDIGO Albuminuria Category (A1–A3) CalculatorClassify a urine albumin-creatinine ratio into the KDIGO A1–A3 categories and see how it sharpens cardiovascular…
- Kt/V Calculator (Dialysis Adequacy)Calculate delivered Kt/V with the Daugirdas second-generation single-pool formula, the standard measure of haemodialysis adequacy.
- MDRD eGFR Calculator (4-Variable)The legacy MDRD Study equation, still quoted in older records, drug labels and trial criteria.
- Measured Creatinine Clearance (24-Hour Urine)Calculate creatinine clearance from a timed 24-hour urine collection and a paired serum creatinine.
- Renal Failure Index CalculatorCalculate the renal failure index from urine and plasma values to help distinguish a pre-renal from…
- Schwartz Bedside Paediatric eGFR CalculatorEstimate GFR in children from height and creatinine using the bedside Schwartz equation.
- Urea and BUN Unit ConverterConvert between BUN in mg/dL, urea in mg/dL and urea in mmol/L — three ways of…
- Urea Reduction Ratio (URR) CalculatorCalculate the urea reduction ratio, the simplest bedside measure of dialysis adequacy, from pre- and post-dialysis…
- Urine Output Calculator (mL/kg/hr)Calculate urine output in mL/kg/hr and apply the KDIGO thresholds used to define acute kidney injury.
- Urine to Plasma Osmolality Ratio CalculatorDivide urine osmolality by serum osmolality to gauge whether the kidney is concentrating urine appropriately, and…
Reproductive, Fertility & Pregnancy Labs 12
- Calculated Free Testosterone (Vermeulen)Solve the Vermeulen equation for free testosterone from total testosterone, SHBG and albumin — the calculation…
- Estradiol (E2) Unit ConverterConvert oestradiol between pg/mL, pmol/L and ng/L, and see why a single value means nothing without…
- Free Androgen Index (FAI) CalculatorCalculate the free androgen index from total testosterone and SHBG, a simple but crude surrogate used…
- FSH Unit ConvertermIU/mL, IU/L and mU/mL are the same number for FSH — this page confirms that and…
- hCG Doubling Time CalculatorCalculate the doubling time from two hCG results and the hours between them, and see how…
- hCG Unit ConvertermIU/mL, IU/L and mU/mL are the same number for hCG — the useful part of this…
- LH to FSH Ratio CalculatorCalculate the LH to FSH ratio and see why a value above 2 is a classic…
- Progesterone Unit ConverterConvert progesterone between ng/mL, nmol/L and µg/L, with the mid-luteal thresholds for ovulation and why pulsatile…
- Prolactin Unit ConverterConvert prolactin between µg/L, ng/mL and mIU/L at 21.2 mIU/L per µg/L — then check for…
- Semen Analysis Interpreter (WHO 2021)Classify a semen analysis against the WHO 2021 sixth-edition lower reference limits — and see why…
- sFlt-1/PlGF Ratio CalculatorCalculate the angiogenic ratio used to rule out pre-eclampsia within one week, and see how the…
- Testosterone Unit ConverterConvert testosterone between ng/dL, ng/mL and nmol/L, with sex-specific ranges and why the time of sampling…
Therapeutic Drug Monitoring 19
- Aminoglycoside Half-Life CalculatorCalculate an aminoglycoside elimination half-life from a paired peak and trough, and check the dosing interval…
- Carbamazepine Unit ConverterConvert carbamazepine between µg/mL, mg/L and µmol/L, with the autoinduction that makes an early level unreliable…
- Ciclosporin Unit ConverterConvert whole-blood ciclosporin between ng/mL and nmol/L, with the C0 versus C2 sampling question and the…
- Clozapine Unit ConverterConvert clozapine trough levels between ng/mL and nmol/L, with the response and seizure thresholds and why…
- Corrected Phenytoin Calculator (Sheiner-Tozer)Correct a total phenytoin level for hypoalbuminaemia using the Sheiner-Tozer equation, so a low albumin does…
- Corrected Phenytoin in Renal FailureCorrect a total phenytoin level in patients with a creatinine clearance below 20 mL/min, where uraemia…
- Digoxin Unit ConverterConvert digoxin between ng/mL, µg/L and nmol/L, with the separate heart-failure and atrial fibrillation targets and…
- Drug Half-Life and Steady State CalculatorCalculate a drug's elimination half-life from two timed levels, and the time to reach steady state…
- Lamotrigine Unit ConverterConvert lamotrigine between µg/mL and µmol/L, with the valproate and enzyme-inducer interactions and the pregnancy-related clearance…
- Levetiracetam Unit ConverterConvert levetiracetam between µg/mL and µmol/L, and see why this renally cleared antiepileptic rarely needs routine…
- Loading Dose CalculatorCalculate a loading dose from volume of distribution, weight and target concentration — and see why…
- Maintenance Dose CalculatorCalculate the maintenance dose per interval from clearance, target steady-state concentration and dosing interval — the…
- Methotrexate Unit ConverterConvert high-dose methotrexate levels between µg/mL and µmol/L, with the time-based thresholds that decide when leucovorin…
- Phenytoin Unit ConverterConvert phenytoin between µg/mL, mg/L and µmol/L, with the 40–79 µmol/L guide range, the saturable kinetics…
- Tacrolimus Unit ConverterConvert whole-blood tacrolimus trough levels between ng/mL and nmol/L, with target ranges by time since transplant…
- Theophylline Unit ConverterConvert theophylline between µg/mL, mg/L and µmol/L, with a narrow window that overlaps toxicity and the…
- Valproate Unit ConverterConvert valproate between µg/mL, mg/L and µmol/L, and see why saturable protein binding means the total…
- Vancomycin AUC24 CalculatorEstimate AUC24 for vancomycin dosing from total daily dose and creatinine clearance, in line with the…
- Vancomycin Dose Adjustment CalculatorAdjust a vancomycin dose proportionally from a measured level, using linear pharmacokinetics to reach a target…
Thyroid 9
- Burch-Wartofsky Score Calculator (Thyroid Storm)Score the degree of systemic decompensation in suspected thyroid storm — a clinical diagnosis that biochemistry…
- Free Thyroxine (FT4) Unit ConverterConvert free T4 between ng/dL, pmol/L and ng/L, and see why the interval belongs to the…
- Free Thyroxine Index (FTI) CalculatorCorrect total T4 for binding-protein changes using T3 uptake — the historical workaround for a direct…
- Free Triiodothyronine (FT3) Unit ConverterConvert free T3 between pg/mL, pmol/L and ng/L, and see why the commonest low FT3 is…
- FT3 to FT4 Ratio CalculatorEstimate peripheral T4-to-T3 conversion from free T3 and free T4 — a marker with no validated…
- Levothyroxine Dose CalculatorEstimate a starting levothyroxine dose from body weight and clinical situation, from cautious elderly starts to…
- Levothyroxine to Liothyronine Dose ConverterInterpret an existing levothyroxine dose in liothyronine-equivalent terms, using the published but contested potency ratios.
- Thyroid Nodule Volume CalculatorCalculate nodule or lobe volume from three ultrasound measurements using the ellipsoid formula, since growth is…
- TSH Unit ConvertermIU/L, µIU/mL and mU/L are the same number for TSH. That is the answer; the rest…
Toxicology & Poisoning 14
- Blood Alcohol Unit ConverterConvert blood ethanol between mg/dL, mg/L, g/L, g/dL and mmol/L, and see why a clinical serum…
- Carboxyhaemoglobin (COHb) InterpreterBand a co-oximetry carboxyhaemoglobin percentage from a non-smoker's baseline to a life-threatening level, and see why…
- Digoxin Immune Fab Dose CalculatorWork out the number of digoxin immune Fab vials from a serum concentration or from a…
- Digoxin Level InterpreterBand a serum digoxin concentration from subtherapeutic through to the thresholds for digoxin-specific antibody fragments, and…
- Iron Toxicity Dose CalculatorConvert a number of iron tablets into ingested elemental iron per kilogram against the 20 and…
- Lithium Level InterpreterBand a 12-hour post-dose serum lithium from subtherapeutic to severe toxicity, and see why the number…
- Methaemoglobin InterpreterBand a co-oximetry methaemoglobin percentage against the thresholds for cyanosis, symptoms and methylene blue, and see…
- Methylene Blue Dose CalculatorCalculate a 1 or 2 mg/kg intravenous methylene blue dose for methaemoglobinaemia, with the volume of…
- N-Acetylcysteine Dose CalculatorWork out the total intravenous acetylcysteine dose for the standard three-bag 21-hour regimen, with each bag's…
- Osmolal Gap CalculatorCalculate the osmolal gap from measured osmolality, sodium, glucose, urea nitrogen and ethanol, and see why…
- Paracetamol Toxic Dose CalculatorConvert a reported paracetamol ingestion into mg/kg against the 200 mg/kg or 150 mg/kg risk-assessment threshold,…
- Rumack-Matthew Nomogram CalculatorPlot a paracetamol concentration against the 150 mg/L or the United Kingdom's 100 mg/L treatment line…
- Salicylate Unit ConverterConvert a salicylate concentration between mg/L, µmol/L, mg/dL and mmol/L — and read the number the…
- Toxic Alcohol Level from Osmolal GapEstimate a methanol, ethylene glycol, isopropanol, acetone or propylene glycol concentration from the osmolal gap while…
Tumour Markers & Oncology Labs 13
- Alpha-Fetoprotein (AFP) Unit ConverterConvert alpha-fetoprotein between ng/mL, µg/L, pmol/L and WHO IU/mL, with the adult reference limit, the 400…
- Body Surface Area (BSA) CalculatorCalculate BSA by the Mosteller or Du Bois formula, the basis of most chemotherapy dosing and…
- CA 125 Unit ConverterU/mL and kU/L are the same number, so the work on this page is the interpretation:…
- CA 15-3 Unit ConverterU/mL and kU/L are the same number for CA 15-3. The conventional cut-off is about 30…
- CA 19-9 Unit ConverterU/mL and kU/L are the same number for CA 19-9 — and around one person in…
- Carcinoembryonic Antigen (CEA) Unit ConverterConvert CEA between ng/mL, µg/L and pmol/L against separate smoker and non-smoker reference limits, and see…
- Free PSA Unit ConverterConvert free PSA between ng/mL, µg/L and pmol/L — but a free PSA on its own…
- Free to Total PSA Ratio CalculatorCalculate the percentage of free PSA, validated in the 4–10 ng/mL diagnostic grey zone to help…
- PSA (Total) Unit ConverterConvert total PSA between ng/mL, µg/L and pmol/L, with age-specific limits and an honest account of…
- PSA Density CalculatorCorrect total PSA for prostate size to separate benign enlargement from a result that warrants biopsy.
- PSA Doubling Time CalculatorEstimate the exponential doubling time between two PSA values, a strong predictor of metastasis after biochemical…
- PSA Velocity CalculatorCalculate the absolute annual rise in PSA — informative at higher PSA values, though no longer…
- ROMA Index Calculator (Ovarian Malignancy Risk)Combine HE4, CA 125 and menopausal status into a single risk estimate that guides referral for…
Urine Chemistry & Urinalysis 12
- 24-Hour Urine Collection Adequacy CalculatorCheck a 24-hour urine collection against expected creatinine excretion for sex and body weight, before a…
- Estimated 24-Hour Urine Protein CalculatorConvert a spot urine protein-creatinine ratio into an estimated daily protein excretion, and know when the…
- Fractional Excretion of Bicarbonate CalculatorSeparate proximal from distal renal tubular acidosis by measuring how much filtered bicarbonate is lost —…
- Transtubular Potassium Gradient (TTKG) CalculatorEstimate distal nephron potassium handling from paired urine and serum values — and understand why nephrologists…
- Urine Albumin Unit ConverterConvert urine albumin between mg/L, mg/dL and µg/mL — the first step before an albumin-to-creatinine ratio,…
- Urine Albumin-Creatinine Ratio (UACR) CalculatorGrade albuminuria from a spot urine sample using the KDIGO A1–A3 categories, without needing a 24-hour…
- Urine Anion Gap CalculatorUse urine electrolytes as a proxy for ammonium excretion, distinguishing gastrointestinal bicarbonate loss from renal tubular…
- Urine Creatinine Unit ConverterConvert urine creatinine between mg/dL, mmol/L, g/L and µmol/L — the denominator that makes a spot…
- Urine Osmolal Gap CalculatorEstimate urinary ammonium excretion from the difference between measured and calculated urine osmolality — the more…
- Urine Protein-Creatinine Ratio (UPCR) CalculatorEstimate daily protein excretion from a spot urine sample, useful when non-albumin proteinuria is suspected.
- Urine Sodium to Potassium Ratio CalculatorCalculate the urine sodium to potassium ratio, used as a rough marker of mineralocorticoid effect and,…
- Urine Specific Gravity to Osmolality ConverterEstimate urine osmolality from specific gravity using the last-two-digits rule, and know when the two measurements…
Vitamins, Trace Elements & Nutrition Labs 13
- Blood Cadmium Unit ConverterConvert whole blood cadmium between µg/L, nmol/L and µg/dL, against separate reference values for smokers and…
- Blood Lead Unit ConverterConvert blood lead between µg/dL, µg/L, µmol/L and nmol/L, and read the result against the CDC…
- Blood Mercury Unit ConverterConvert whole blood mercury between µg/L, nmol/L and µg/dL, and read the result against the general-population…
- Geriatric Nutritional Risk Index (GNRI) CalculatorCalculate the Geriatric Nutritional Risk Index from serum albumin, weight and height, with the original risk…
- Nitrogen Balance CalculatorCalculate 24-hour nitrogen balance from protein intake and urine urea nitrogen, and see what makes the…
- Prognostic Nutritional Index (PNI) CalculatorCalculate Onodera's Prognostic Nutritional Index from serum albumin and total lymphocyte count, with the original surgical…
- Red Cell Folate Unit ConverterConvert red cell folate between ng/mL, µg/L and nmol/L, and see why the result reflects the…
- Urine Urea Nitrogen Unit ConverterConvert urine urea nitrogen between mg/dL, mmol/L and g/L, and keep urea nitrogen and urea itself…
- Vitamin A IU to mcg RAE ConverterConvert vitamin A from international units to micrograms of retinol activity equivalent, using the correct factor…
- Vitamin B12 Unit ConverterConvert serum vitamin B12 between pg/mL, ng/L and pmol/L, and see why a normal result does…
- Vitamin D (25-OH) Unit ConverterConvert total 25-hydroxyvitamin D between ng/mL, nmol/L and µg/L, with the deficiency tiers and an honest…
- Vitamin E IU to mg ConverterConvert vitamin E from international units to milligrams of alpha-tocopherol, using the correct factor for the…
- Zinc to Copper Ratio CalculatorCalculate the serum zinc to copper ratio, and see why it is an orientation aid rather…
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