Normal hematocrit for females averages 41. What is the corresponding mean plasma percentage?

1. Hematocrit is the volume percentage of erythrocytes in a centrifuged sample. 2. Leukocytes and platelets are too few to count, so the rest of the sample is treated as plasma. 3. Mean plasma percentage is therefore 100 minus the mean hematocrit. 4. For females that is 100 minus 41, which gives approximately 59 percent. 5. About 53 percent is the matching figure for males, whose mean hematocrit is 47, so it is the trap for a candidate who mixes up the two sexes. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.1 An Overview of Blood_