Red Blood Cell Count (RBC)
Red blood cell (RBC) count reports the number of red blood cells in a measured volume and is interpreted as part of a complete blood count.
SomaZeus display band
For care decisions, use the interval printed by the reporting lab and ask your clinician. Labs, assay methods, and individual context vary; the numbers below are SomaZeus display guidance.
- Male: 4.5–5.9 M/µL
- Female: 4–5.2 M/µL
Why hard-training athletes watch it
RBC count may change with several physiological or measurement factors. The result gives a clinician context alongside hemoglobin and hematocrit but cannot establish a cause alone.
When to retest
Ask your clinician whether and when a repeat is appropriate and which related blood-count values are needed for comparison.
Talk to your clinician
Review an unexpected result or change with your clinician alongside the full blood count, symptoms, history, and reporting lab interval.
Related reading
SomaZeus charts red blood cell count (rbc) over time and keeps weight and nutrition logs in the same dated record, so you can review context beside the result. Get your first read →
Source: NIH MedlinePlus