Blood Donation FAQs
What are the minimum requirements to become a blood donor?
Check with your local blood bank to determine the exact requirements, but generally, you must be at least 16 years of age, a minimum of 110 pounds, and in basic good health.
Will donating blood hurt?
You may feel a slight sting in the beginning lasting only a couple of seconds, but there should be no discomfort during the donation.
Are blood donors paid?
No. Blood collected for transfusion in the US is given by volunteer blood donors.
How badly is blood needed?
Blood supplies can vary depending on the region and time of year. As donor qualifications continue to become stricter and as the donor population ages, our nation is at risk of a low blood supply. If you are eligible, your blood donations are needed.
Why are there often blood shortages?
Most blood centers strive to maintain an optimum inventory level of a three-day supply. Due to unpredictable demands from trauma incidents the inventory fluctuates hourly. When the blood supply drops below a three-day level, blood centers begin alerting local donors to increase the inventory to a safe operating level.
Can I get AIDS from donating blood?
No. There is no risk of contracting AIDS or any other disease through the donation process. Each collection kit is sterile, pre-packaged and used only once.
Do I have enough blood in my body to donate?
Yes. The body contains 10 to 12 pints of blood. Your whole blood donation is approximately one pint.
How much blood is taken?
For a whole blood donation, approximately one pint (which weighs about one pound) is collected. For a platelet donation, the amount collected depends on your height, weight and platelet count.
How much time does it take for my body to replace the blood that I donated?
Not long at all. The volume of fluids will adjust within a few hours of your donation. The red blood cells will be replaced within a few weeks.
How often may I donate?>
You may donate whole blood once every 56 days, which allows plenty of time for your red cells to be replenished. Platelet (apheresis) donors may donate more frequently -- as often as once every seven days and up to 24 times per year. This is because the body replenishes platelets and plasma more quickly than red cells. Platelets will return to normal levels within about 72 hours of donating. Plasma (the liquid portion of your blood) will return to normal levels within a couple of days. Red blood cells (the oxygen-carrying cells) will take approximately two weeks to reach their normal levels.
How long until my blood is used?
Most blood donations are processed and available for use within 48 hours.
Are the health history questions necessary every time I donate?
To ensure the safest possible blood supply, all donors must be asked all the screening questions at each donation. The FDA requires that all blood centers conform to this practice.
What is the most common blood type?
The approximate distribution of blood types in the US blood donor population is as follows. Distribution may be different for specific racial and ethnic groups:
O Rh-positive - 39 percent
O Rh-negative - 9 percent
A Rh-positive - 31 percent
A Rh-negative - 6 percent
B Rh-positive - 9 percent
B Rh-negative - 2 percent
AB Rh-positive - 3 percent
AB Rh-negative - 1 percent
In an emergency, anyone can receive type O red blood cells. Therefore, people with type O blood are known as "universal donors." In addition, individuals of all types can receive type AB plasma because it does not contain anti-A or anti-B.
Is there such thing as artificial blood?
Scientists have yet to find a successful substitute for human blood. This is why blood donors are so vital to the lives of those who are in need of blood.
What fees are associated with blood?
While donated blood is free, there are significant costs associated with collecting, testing, preparing components, labeling, storing and shipping blood; recruiting and educating donors; and quality assurance. As a result, processing fees are charged to recover costs. Processing fees for individual blood components vary considerably. Processing fees for one specific component also may vary in different geographic regions. Hospitals charge for any additional testing that may be required, such as the crossmatch, as well as for the administration of the blood.
Is there anything I should do before I donate?
Be sure to eat well at your regular mealtimes and drink plenty of fluids.
If I was deferred once before, am I still ineligible to donate?
If your deferral is of a permanent nature, you will be informed. Otherwise, the deferral time depends upon the reason for deferral. Prior to each donation, you will be given a mini-physical and medical interview. At that time, it will be determined if you are eligible to donate blood on that particular day.
If I just received a flu shot, can I donate blood?
Yes. There is no waiting period to donate after receiving a flu shot.
If I have a cold or the flu, can I donate blood?
In order to donate, blood centers require that you be in generally good health (symptom-free) and recommend that you are feeling well.
Can I still donate if I have high blood pressure?
Yes, if your blood pressure in under control and within the limits set in the donation guidelines.
What if I'm taking aspirin or medication prescribed by my doctor?
Aspirin and ibuprofen will not affect a whole blood donation. Apheresis platelet donors, however, must not take aspirin or aspirin products 48 hours prior to donation. Many other medications are acceptable. It is recommended that you call the donor center ahead of time to inquire about any medications you are taking.
What if I have anemia?
You cannot give blood if you have anemia. However, this can often be a temporary condition. Your hemoglobin will be tested before you donate to make sure it is at an acceptable level.
How can I increase my iron level?
Donors may be deferred from donating due to a low hematocrit (iron) level. This restriction is for the safety of the donor and ensures that after donation, the donor's hematocrit level will still be within the normal range for a healthy adult. Since hematocrit levels can fluctuate daily, a deferral for a low hematocrit level does not mean a donor is anemic. A donor may help increase his or her hematocrit levels by eating foods high in iron such as red meat, dark green vegetables and raisins or by taking a multivitamin that contains iron.
How long will the actual donation process take?
The actual donation takes about 5-10 minutes. The entire donation process, from registration to post-donation refreshments, takes about one hour.
What types of tests are performed on donated blood?
After blood is drawn, it is tested for ABO group (blood type) and RH type (positive or negative), as well as for any unexpected red blood cell antibodies that may cause problems for the recipient. Screening tests performed are listed below:
Hepatitis B surface antigen (HBsAg)
Hepatitis B core antibody (anti-HBc)
Hepatitis C virus antibody (anti-HCV)
HIV-1 and HIV-2 antibody (anti-HIV-1 and anti-HIV-2)
HTLV-I and HTLV-II antibody (anti-HTLV-I and anti-HTLV-II)
Serologic test for syphilis
Nucleic acid amplification testing (NAT) for HIV-1 ribonucleic acid (RNA), HCV RNA and WNV RNA
Nucleic acid amplification testing (NAT) for HBV deoxyribonucleic acid
Anitbody test for Trypanosoma cruzi, the agent of Chagas' disease
How will I feel after I donate?>
Most people feel great after giving blood. If you feel any abnormal symptoms, let a staff member at the blood donation center or blood drive know. You should avoid lifting heavy objects or strenuous exercise for the next 24 hours; otherwise you can resume full activity as long as you feel well.
Where can I donate blood?
Use the AABB blood bank locator to find the blood donation center nearest you, and then contact the blood bank to make an appointment and find out what they require.
What can you do if you aren't eligible to donate?
While a given individual may be unable to donate, he or she may be able to recruit a suitable donor. Blood banks are always in need of volunteers to assist at blood draws or to organize mobile blood drives. In addition, monetary donations are always welcome to help ensure that blood banks can continue to provide safe blood to those in need.
How can I host a blood drive at my work, school or church?
Use the AABB blood bank locator to find the blood donation center nearest you, and then contact the blood center to find out what they require.
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