Blood
Volume vs Body Weight
90 lb
person
90 x 454 = 41 kg
1000
160 lb
person
8%
of body weight is blood
41 x 0.08 = 3.3 kg
Assume
1 ml of blood = 1 gm
3.3 kg x 1000 = 3,300 ml
3,300 ml x 100 = 12%
405
160 x 454 = 72.4 kg
1000
72.4 x 0.08 = 5.8 kg
5.8 kg x 1000 = 5,800 ml
Minimum
routine blood draw = 405 ml
5,800 ml x 100 = 7%
405
