Skip to main content
. Author manuscript; available in PMC: 2014 Jan 30.
Published in final edited form as: Biotechnol Bioeng. 2009 Feb 1;102(2):521–534. doi: 10.1002/bit.22066

Table 1.

Typical composition of human blood (McKenzie 1996)

Type of cell Average number of cells/per ml of fresh blood
Erythrocyte (RBC) 5,000,000,000 (range from 4.4 to 5.9 × 109)
Leukocytes (WBC) 7,000,000 (range from 3.9 to 10.6 × 106)
Platelet 295,000,000 (range from 150 to 440 × 106)
Total 5,302,000,000
Reported CTC's ?? (range from ~0.2 to >1000)
Leukocytes compositions
     Lymphocytes 2,400,000 (range of 1.2 to 3.5 × 106)
     Monocytes 300,000 (range of 0 to 0.5 × 106)
     Granulocytes 4,000,000 (range of 1.4 to 6.6 × 106)