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Erythropoietin (EPO) Unit Converter
Erythropoietin (EPO) is a glycoprotein hormone produced primarily by the peritubular cells of the kidney in response to hypoxia (low oxygen levels). Its primary function is to stimulate the bone marrow to produce red blood cells (erythropoiesis), thereby increasing the oxygen-carrying capacity of the blood.
Clinically, serum EPO levels are measured to differentiate the cause of anemia or polycythemia. In anemia caused by chronic kidney disease, EPO levels are typically inappropriately low. In polycythemia vera (a primary bone marrow disorder), EPO is suppressed, whereas in secondary polycythemia (e.g., high altitude, COPD), EPO levels are elevated. Results are almost universally reported in International Units (mIU/mL or IU/L). This converter handles the standard activity units used in hematology.
SI / Standard
RecommendedInternational Units per liter.
Common Clinical Units
Clinical Context
Reference Range: In healthy adults, serum EPO levels typically range from 2.6 – 18.5 mIU/mL (IU/L).
Levels must always be interpreted in the context of the hemoglobin/hematocrit level. Anemic patients should have high EPO levels as a compensatory mechanism. If an anemic patient has “normal” EPO levels, it indicates an inadequate response (typical of renal failure or chronic inflammation). The conversion is straightforward: 1 mIU/mL = 1 IU/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., mIU/mL). 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 are instantly updated.
Verify Units
Check the SI Units section. IU/L is the standard reporting unit for EPO.
Reset
Use the Clear button to reset all fields before starting a new calculation.
Frequently Asked Questions & Tips
Yes. “milli-International Units per milliliter” is numerically identical to “International Units per liter.”
EPO is a glycoprotein with variable carbohydrate content, which affects its mass but not necessarily its biological activity. Therefore, activity units (IU) are the standard.