What do your hematocrit levels mean?

The short answer

Nobody we follow has said what your hematocrit should be. It comes up on the shows, but never with a number.

Your lab prints 36–46 %. That range exists to catch disease, not to describe your best.

Labs print different ranges by sex: about 36–46 % for women and 40–50 for men.

What hematocrit measures

The share of your blood volume made up of red blood cells.

It moves with hydration as well as red cell production, so it goes alongside haemoglobin.

Checked against MedlinePlus — Hematocrit Test.

Common questions

What is a normal hematocrit level?

Most US labs print 36–46 %. Your report grades you against that range. It exists to catch disease, not to describe your best. Labs print different ranges by sex: about 36–46 % for women and 40–50 for men.

What does your hematocrit number mean?

Under 36 %, your report marks it low. Between 36 and 46 it prints as normal. Over 46, your report marks it high. Nobody we follow has drawn a line inside that range. Labs print different ranges by sex: about 36–46 % for women and 40–50 for men.

What does the hematocrit test measure?

The share of your blood volume made up of red blood cells. It moves with hydration as well as red cell production, so it goes alongside haemoglobin.

Why is there no target here?

Because nobody we follow has named a number for hematocrit. If that changes, it will be here.