HCT

Percentage of blood volume occupied by red blood cells. Reflects oxygen-carrying capacity and is influenced by hydration status, altitude, and erythropoiesis.

Also known as:

Hematocrit

HCT ranges for

Interpret your result

"Normal" lab range for HCT is between 38.5 and 52 % for males:

38.5

According to OptimalDX, HCT should be between 40 and 48 % for males:

Optimal range

Optimal range for HCT appears to be between 40 and 50 % for males:

38.5

Why this optimal range?

Preliminary range is based on functional health organizations including but not limited to those listed above.

This page is marked as a work-in-progress.

The optimal range is derived from a limited number of sources and is subject to change.

Your interpretation

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About the site author
My personal mission is to extend human lifespan by collectively adding 1 million years to people's lives.
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Zsolt Szabo
Precision Health Consultant for Longevity Clinics, Biohacker, and Software Engineer

Please send me relevant research and feedback.

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I am particularly interested in research on biomarkers associated with all-cause mortality and on defining optimal reference ranges.