Red Blood Cell Count
The reference ranges provided here represent a theoretical guideline that should not be used to interpret your test results. Some variation is likely between these numbers and the reference range reported by the lab that ran your test. Please consult your doctor. For more information on reference ranges, please read Reference Ranges and What They Mean.
|Age||Conventional Units2||SI Units3|
|0-18 years||Not available due to wide variability. See child's lab report for reference range.|
|Adult male||4.5-5.9 x 106/microliter||4.5-5.9 x 1012/L|
|Adult female||4.5-5.1 x 106 microliter||4.1-5.1 x 1012/L|
1 from Henry's Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. McPherson R, Pincus M, eds. Philadelphia, PA: Elsevier Saunders; 2011.
2 Conventional Units are typically used for reporting results in U.S. labs
3 SI Units are used to report lab results outside of the U.S.
© 2017 American Association for Clinical Chemistry, republished from Lab Tests Online.*
Descriptions of clinical laboratory tests were originally prepared for use on Lab Tests Online, an award-winning patient education website on clinical laboratory testing. Lab Tests Online is produced by the American Association for Clinical Chemistry (AACC), a global scientific and medical professional organization dedicated to clinical laboratory science and its application to healthcare. The Lab Tests Online website is developed in collaboration with other laboratory professional societies and is funded in part through corporate sponsorships.