Calculator
RDW-CV Calculator
Calculate the red cell distribution width coefficient of variation from RDW-SD and MCV.
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Reference Ranges Used
- RDW (Red Cell Distribution Width) - Adult 11.5–14.5 %
Formula & Clinical Notes
Formula
RDW-CV = (RDW-SD / MCV) × 100
Clinical Notes
The normal RDW-CV is approximately 11.5-14.5%. An elevated RDW reflects increased red cell size heterogeneity (anisocytosis) and is typically high in iron deficiency anemia while normal in thalassemia trait.
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