Red Blood Cell Distribution Width Calculator

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1 minute

The Red Blood Cell Distribution Width (RDW) Calculator assesses the variation in red blood cell (RBC) width, a vital component of complete blood count reports.

Typically, RBCs measure between 6-8µm in size, but certain disorders can cause significant deviations. Higher RDW values indicate greater size variation. The normal reference range for human RBCs is 11-14%. In cases of anemia, RDW test results are often combined with mean corpuscular volume (MCV) results to determine the underlying cause. Explore RDW levels efficiently with our calculator.

Std Dev of MCV
MCV
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    \text{RDW} = \frac{\text{Std Dev of MCV} \times 100}{\text{MCV}}