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Creatinine Unit Converter
Creatinine is a waste product derived from the breakdown of creatine phosphate in skeletal muscle. Because it is produced at a relatively constant rate and eliminated from the body almost entirely by glomerular filtration (with minimal reabsorption), serum creatinine is the single most common and crucial marker used to estimate Glomerular Filtration Rate (GFR).[Image of nephron structure showing glomerular filtration]
Clinically, a rising serum creatinine concentration is the classic sign of acute or chronic kidney injury. It is used in numerous formulas, including the CKD-EPI and MDRD equations, to calculate estimated GFR (eGFR). However, its limitations include dependence on muscle mass, age, and dietary protein intake. Accurate unit conversion between the US standard (mg/dL) and the International SI unit ($\mu\text{mol/L}$) is critical for diagnosing renal impairment.
SI Units
RecommendedMicromoles per liter (Standard International).
Conventional Units
Clinical Context
Reference Range: In healthy adults, serum creatinine is typically 0.6 – 1.2 mg/dL (53 – 106 µmol/L).
Levels below the reference range may be seen in patients with low muscle mass (elderly, amputees) or severe liver disease (reduced creatine synthesis). Levels exceeding $4.0 \text{ mg/dL}$ usually indicate severe renal impairment. The conversion factor is based on MW $113.12 \text{ g/mol}$: 1 mg/dL $\approx$ 88.4 µmol/L.
Clinical References
How to Use This Calculator
Follow these steps to get accurate clinical conversions instantly.
Enter Values
Input your laboratory results into the corresponding unit field (e.g., mg/dL). You can use either dot or comma decimals.
Automatic Conversion
The calculator works in real-time. As you type in one field, all other units (like µmol/L) are instantly updated.
Verify Units
Check the SI Units section. µmol/L is the international standard.
Reset
Use the Clear button to reset all fields before starting a new calculation.
Frequently Asked Questions & Tips
1 mg/dL = 88.4 µmol/L. This is the constant factor used in clinical equations (e.g., eGFR).
Creatinine is less affected by diet and hydration than Urea Nitrogen (BUN), making it a more reliable filter function marker.