SIGNAL // LOADING
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Glossary term
Red cell distribution width
Also known as RDW
Red cell distribution width is a biomarker used in cardiometabolic and preventive-health interpretation.
Red cell distribution width is interpreted as part of a full biomarker pattern rather than in isolation. Trends over time and adjacent markers usually matter more than a single draw.
- Symbol
- RDW
- Unit
- %
Medically reviewed byDr. Lena Okafor, MD
Medical Director - updated April 2026How we review
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