Calculator: Reticulocyte Production Index (RPI) in adults

Input

Hct
Retic

Results

Important: Inputs must be complete to perform calculation.


RPI

Notes

The Maturation term represents the maturation time of red blood cells (in days) at various levels of anemia.
- Maturation = 1.0 for Hct ≥40%.
- Maturation = 1.5 for Hct 30 to 39.9%.
- Maturation = 2.0 for Hct 20 to 29.9%.
- Maturation = 2.5 for Hct <20%.
An RPI >3 shows a normal marrow response to anemia. An RPI <2 is an inadequate response to anemia.
With a normal H&H, an RPI of 1 is normal.
Hct: hematocrit; Retic: reticulocyte; H&H: hemoglobin and hemotocrit.

Equations used

RPI = (Hct / 45) * Retic / Maturation

References

Hutchinson RE, Davey FR. Hematopoiesis. In: Clinical Diagnosis and Management by Laboratory Methods, 19th ed, Henry JB (Ed) WB Saunders 1996.

Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.

Topic 90441 Version 8.0

خرید پکیج

Calculator: Reticulocyte Production Index (RPI) in adults