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Hematocrit

Hematocrit reports the proportion of blood volume made up of red blood cells. It is interpreted with the reporting lab interval, the rest of the blood count, symptoms, and history.

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: 38–50 %
  • Female: 35–45 %

Watch points

  • Watch point 1: at or above 54 %
  • Watch point 2: at or above 52 %
  • Watch point 3: at or above 50 %

SomaZeus uses the same watch points for men and women in this display.

Why hard-training athletes watch it

Hydration, altitude, training, health conditions, medications, and other factors may affect a result. A dated log gives your clinician context but cannot establish the cause of a change.

When to retest

Ask your clinician whether and when a repeat is appropriate and what conditions would make two results comparable.

Talk to your clinician

Review an unexpected result or change with your clinician alongside hemoglobin, red blood cell count, symptoms, history, and the reporting lab interval.

Related reading

SomaZeus charts hematocrit 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