A 25-year-old male asked:
Hi so I have a question about how much blood in the human body. Online it said 1- 2 gallons, but is that everything or just red blood cells only?
1 doctor answer
Dr. James Ferguson answered
45 years experience in Pediatrics
The basics: Blood is composed of fluid (serum) and various cellular elements like red cells, white cells, platelets and a variety of other factors. Blood means everything. The red cell fraction makes up 45-52% of total blood volume in males, 37-48% in females.
Answered on Jan 7, 2019
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