RBC Count
Red cell number and share of blood.

A typical RBC count is about 4.5–5.9 in men and 4.1–5.1 ×10¹²/L in women; hematocrit is about 41–50% in men and 36–44% in women.
| Test | If low | If high |
|---|---|---|
| RBC | Anemia, bleeding, marrow suppression | Dehydration, smoking, altitude, polycythemia |
| Hematocrit | Falls together with hemoglobin | Fluid loss (hemoconcentration) |
- Pagana KD et al., Mosby's Diagnostic and Laboratory Test Reference
- WHO — Haemoglobin concentrations for the diagnosis of anaemia (2011)
General information only; not diagnosis or treatment. Review your results with your clinician.


