A blood count (complete blood count, CBC) is a routine lab test measuring cellular components: red blood cells, white blood cells, platelets, hemoglobin, hematocrit, and differential. For men, reference ranges differ: hemoglobin is typically higher (13.5–17.5 g/dL) due to testosterone. A CBC can detect anemia, infection, inflammation, or clotting disorders, but it is not a comprehensive health check. It does not measure hormones (e.g., testosterone, PSA), metabolic markers (e.g., glucose, lipids), or organ function (e.g., liver, kidney). Risks of venipuncture are minimal: bruising, rare infection or nerve irritation. Key limitations: a normal CBC does not rule out disease (e.g., early leukemia, chronic inflammation). False positives/negatives can occur due to medications, time of day, hydration status, or lab error. Interpretation requires clinical context – an isolated value is rarely diagnostic. For men over 50, PSA screening is often discussed but is not part of a CBC. MyBody-X tests are lifestyle-oriented and not a substitute for medical diagnostics. A CBC is useful as a screening tool but has limited predictive value for complex conditions. Evidence: practice-based; no specific studies from the provided context.
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