, from "English"Red blood cell Distribution Width") is an erythrocyte index that measures the variability of the size of red blood cells in peripheral blood.
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RDW is a parameter of the blood count (blood count) and, in the laboratory, the value is calculated automatically by modern blood cell counters.
The interpretation of the RDW result is of important utility in the diagnosis and monitoring of numerous pathological conditions, characterized by inhomogeneity in the volume of erythrocytes.
A high red blood cell distribution width (RDW) value is indicative of anisocytosis (presence of red blood cells with considerable variability in size), so it can help determine the causes of anemia and contributes to the diagnosis of thalassemia, chronic liver disease, myelodysplastic syndromes, iron deficiency, vitamin B12 or folate deficiency.
(MCHC, MCV and MCH) and the values relating to hemoglobin (Hb).
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