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A member asked:
High rcdw in a blood test. is it bad?
A doctor has provided 1 answer
Big picture: Red cell size distribution width can be high simply from donating blood, or from early iron deficiency before anemia or any of several non-problems. And reference ranges are set so that several percent of healthies fall outside. Your history, physical exam and other labs are what matter; ignore a lone high rdw.
Answered 7/21/2018
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