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William Aird: A Physiological Approach to Anemia
Apr 20, 2026, 11:15

William Aird: A Physiological Approach to Anemia

William Aird, Professor of Medicine at Harvard Medical School, shared a post on X:

“Aproach to anemia

Most anemia algorithms start with the MCV.

That’s a mistake.

The first branch point is the reticulocyte count.

It asks a physiological question: Is the marrow responding?

MCV describes appearance.

Reticulocytes reveal function.”

William Aird: A Physiological Approach to Anemia

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