Reference ranges
Red blood cell count reference range
Reference ranges describe the interval a laboratory prints next to your result. They are not a diagnosis of what is “normal” for you personally — your clinician interprets results in context.
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What Red blood cell count measures
Red blood cells carry oxygen throughout the body. This test counts them per volume of blood as part of the broader CBC panel.
Why ranges differ
Laboratories set their own reference intervals using their methods, equipment, and population data. That is why the range on your Quest report may differ from a LabCorp report — always use the interval printed on your source document.
Common units
Red blood cell count is often reported in M/µL. Confirm units on your original report before comparing values across time.