When you donate whole blood, one pint is collected. Depending on your gender, height, weight and total blood volume, you can give up to 2 pints in an automated blood collection. For example, one donor may be able to donate two units of Red Blood Cells, another may donate one unit of Platelets and one unit of Plasma.
Herein, how long does it take to make new blood?
Generally speaking, after donating a unit of blood, the body replaces the fluid and white cells within 24 hours, and platelets and plasma proteins within 48-72 hours. The red blood cells are completely replaced in 4-6 weeks.
What tests are done when you donate blood?
As of late 2016, such testing consists of determining the ABO blood group and Rh blood type of the donated unit, testing for red cell antibodies, and performing infectious disease screening for the following agents: human immunodeficiency virus (HIV)-1, HIV-2, human T-lymphotropic virus (HTLV)-I, HTLV-II, hepatitis C
What are the requirements for donating blood?
You must weigh at least 110 lbs to be eligible for blood donation for your own safety. Students who donate at high school drives and donors 18 years of age or younger must also meet additional height and weight requirements for whole blood donation (applies to girls shorter than 5'6" and boys shorter than 5').