DEAR DR. GOTT: What is the RDW on the blood work I have done at the lab? What does it stand for? My level is high.
DEAR READER: RDW stands for red cell distribution width that essentially measures the size of red blood cells and is a part of a normal complete blood count (CBC) test. CBCs may be ordered as a part of standard lab work during routine physical examination or as part of a blood panel to aid in the determination of a diagnosis.
RDW must be used in conjunction with other levels found via the CBC, or with other blood tests to diagnose anemia and/or to differentiate the various types of anemia.
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