What Is RBC Count in a Blood Test?
RBC count measures the number of red blood cells per microliter of blood.
Normal Range
- Men: 4.5–5.9 million/µL
- Women: 4.1–5.1 million/µL
High RBC
- Dehydration
- Chronic lung disease
- High altitude
- Polycythemia vera
- Smoking
- Testosterone use
Low RBC
- Anemia (any cause)
- Blood loss
- Bone marrow suppression
- Nutritional deficiency
Source: NLM MedlinePlus, American Association for Clinical Chemistry.
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