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----Will waiting to do AS after donating blood help spike blood level concentration ?

From howstuffworks.com

A unit of blood is 1 pint or 450 milliliters and is mixed with chemicals (CPD) to prevent clotting. Each year approximately 12-14 million units of blood are donated in the U.S. Generally, a blood donor must at least 17 years old, be healthy, and weigh over 110 pounds. Prior to donating blood , the donor is given an information pamphlet to read. A health history is taken to ensure that the donor has not been exposed to diseases that can be transmitted by blood, and to determine if it is safe for that person to donate blood for their own health. The donor’s temperature, pulse, blood pressure, weight are obtained. A few drops of blood are obtained to make sure the donor is not anemic. It usually takes less than 10 minutes for the blood to be removed once the needle has been placed. Sterile, single use equipment is used so there is no danger of any infections to the donor. Donors should drink extra fluids and avoid exercise that day. Blood can be donated every 8 weeks.

Autologous blood donation is the donation of blood for one’s own use, usually prior to surgery. Apheresis is the procedure in which only a specific component of a donor’s blood is removed (usually platelets, plasma or leukocytes). In this way more of that specific component can be removed than can be derived from 1 unit of blood.

Each unit of blood can be separated into several components so that the components can be given to someone with a need for that component only. Therefore that unit of blood can help many people instead of just one. These components include:

Packed RBC’s
Fresh Frozen Plasma
Platelets
WBC’s
Albumin
Immunoglobulins
Cryoprecipitate Anti-Hemolytic Factor
Factor VIII concentrate
Factor IX concentrate
Red Blood Cells (packed RBC’s) are transfused to increase oxygen carrying capacity in patients who are bleeding or extremely anemic. 1 unit of blood increases the hemoglobin by 1 g/dl and the hematocrit by 2-3%.

Plasma (fresh frozen plasma) once thawed is transfused to treat bleeding disorders when many clotting factors are missing. This occurs in liver failure, when too much of a blood thinner called Coumadin has been given, or when severe bleeding and massive transfusions result in low levels of clotting factors.

Platelets are transfused in people with low platelet count (Thrombocytopenia) or abnormally functioning platelets. Each unit of platelets raises the platelet count by approximately 5,000 platelets per microliter of blood.

Cryoprecititate and Factor VIII concentrate are used in Hemophilia A (Classic Hemophilia) since this is caused by a Factor VIII deficiency. Factor IX concentrate is used in Hemophilia B (Christmas disease) which is caused by a deficiency of clotting Factor IX.

Immunoglobulins are given to persons who have been exposed to certain diseases such as rabies, tetanus or hepatitis to help prevent that disease.

Albumin makes up 60% of the protein in plasma, is produced in the liver and is used when blood volume needs to be increased and fluids have not worked as in severe bleeding, liver failure and severe burns.


There are many tests that are performed on blood to ensure its safety. These tests include:

Hepatitis B Surface Antigen
Hepatitis B Core Antibody
Hepatitis C Antibody
HIV-1, HIV-2 Antibodies
HIV-1 p24 Antigen
HTLV-1, HTLV-2 Antibodies
Syphilis
If any of these tests are positive then the blood is discarded. As of 1996, the risk of getting HIV from a single blood transfusion was 1 in 676,000, the risk of developing Hepatitis B was 1 in 66,000 units of blood and Hepatitis C was 1 in 100,000 units of blood. However newer testing may decrease the risk of Hepatitis C to 1 in 500,000 - 1,000,000.
 
everything rugger said is correct. you can donate. don't worry about it. i answered yes, then called them back and said i made a mistake. now they beg for my blood. as long as you don't have hepatitis or HIV or something like that, they'll take your blood.
 
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