(1) The ratio of blood volume that is occupied by red blood cells, usually expressed as a percentage of the total blood volume.

(2) The instrument used to determine the relative amounts of corpuscles and plasma in the blood.


An average (normal) value in men is 46% and in women is 38%.

Word origin: the term "hematocrit" was coined in 1903. Its roots stem from the Greek words hemat - blood, and krites, judge - meaning to gauge or judge the blood.

Abbreviation: Ht, HCT. Variant: haematocrit.

Synonym: packed cell volume (PCV), erythrocyte volume fraction (EVF).

Retrieved from "http://www.biology-online.org/bodict/index.php?title=Hematocrit&oldid=94499"
First | Previous (Hematocele) | Next (Hematocrya) | Last
Please contribute to this project, if you have more information about this term feel free to edit this page.