How to Cite This Chapter: Don-Wauchope A, Chetty VT, Ivica J, Kavsak P, Khan WI, Lafreniere M, Nouri K, Solnica B. Red Blood Cell (RBC) Count. McMaster Textbook of Internal Medicine. Kraków: Medycyna Praktyczna. https://empendium.com/mcmtextbook/chapter/B31.1269.3.7.27.1. Accessed December 05, 2025.
Last Reviewed: May 9, 2022
Last Updated: May 9, 2022
Chapter Information
McMaster Textbook of Internal Medicine Editorial Offices
Editorial Office (Canada)
Authors: Andrew Don-Wauchope, Vasudhevan T. Chetty, Joško Ivica, Peter Kavsak, Waliul I. Khan, Matthew Lafreniere, Kazem Nouri
Editorial Office (Poland)
Authors: Bogdan Solnica
For a brief introduction and guide to abbreviations, see Laboratory Tests: General Remarks.
Analyte [material]
Red blood cell (RBC) count
Reference range, target level, or decision threshold
Men: 4,200,000-5,400,000/microL (4.2-5.4 Tera/L)
Women: 3,500,000-5,200,000/microL (3.5-5.2 Tera/L)
Interpretation of results
↓ Anemias, overhydration
↑ Polycythemia vera, secondary and relative polycythemias, thalassemia
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