A. 15 trillion
B. 20 trillion
C. 25 trillion
D. 30 trillion
Submitted by: Rashid Mehmood
In a normal human body, the total number of red blood cells is 30 trillion. Women have roughly 4 to 5 million red blood cells per microliter of blood, whereas men have about 5 to 6 million per microliter of blood. Red blood cells comprise approximately 70% of total human body cell number.