It is now easier, and in many cases faster, to donate platelets. Only one of your arms is used to withdraw blood, separate out the platelets, and return the rest of the blood to you. Your other arm is free to turn pages in a book, click on a laptop keyboard, or scratch an itch during the 70 to 90 minute donation procedure. This is in addition to the time it takes you to complete your registration form and have your medical history taken and reviewed. Some cancer treatments cause a loss of platelets.
These specialized blood cells help control blood clotting. When platelet levels fall too low, patients may need a transfusion of platelets to replenish their supply and prevent life-threatening hemorrhages. Some patients, especially those who have had a bone marrow transplant or who are being treated for leukemia, may require daily platelet transfusions for several weeks.
Yes, it is safe to donate platelets. All needles and supplies used to collect platelets are sterile, disposable, and used only once — for you — before being discarded. Within a few days of a blood donation, your body replaces the lost fluids. And after two weeks, your body replaces the lost red blood cells. Before you can donate blood, you will be asked to fill out a confidential medical history that includes questions about behaviors known to carry a higher risk of bloodborne infections — infections that are transmitted through the blood.
Because of the risk of bloodborne infections, not everyone can donate blood. The following are a few high-risk groups that are not eligible to donate blood:. You will also have a brief physical exam, which includes checking your blood pressure, pulse and temperature.
A small sample of blood is taken from a finger prick and is used to check the oxygen-carrying component of your blood hemoglobin level. If your hemoglobin concentration is normal and you've met all the other screening requirements, you can donate blood. The virus that causes coronavirus disease COVID hasn't been shown to be transmitted through blood transfusions. However, the U. Food and Drug Administration suggests waiting to donate blood for at least 14 days after a positive diagnostic test for COVID without symptoms or for at least 14 days after symptoms of COVID have completely cleared up.
Those who have tested positive for COVID antibodies but didn't have a diagnostic test and never developed symptoms can donate without a waiting period or having a diagnostic test done before donation. However, if a live attenuated viral COVID vaccine becomes available and you get it, wait 14 days after being vaccinated before donating blood.
If you aren't sure what type of vaccine you got, wait 14 days before donating blood. You lie or sit in a reclining chair with your arm extended on an armrest. If you have a preference for which arm or vein is used, share it. A blood pressure cuff or tourniquet is placed around your upper arm to fill your veins with more blood.
This makes the veins easier to see and easier to insert the needle into, and also helps fill the blood bag more quickly. Then the skin on the inside of your elbow is cleaned.
A new, sterile needle is inserted into a vein in your arm. This needle is attached to a thin, plastic tube and a blood bag. Once the needle is in place, you tighten your fist several times to help the blood flow from the vein. Blood initially is collected into tubes for testing. When these have been collected, blood is allowed to fill the bag, about a pint about half a liter.
The needle is usually in place about 10 minutes. When complete, the needle is removed, a small bandage is placed on the needle site and a dressing is wrapped around your arm. Another method of donating blood becoming increasingly common is apheresis. During apheresis, you are hooked up to a machine that can collect and separate blood components, such as red cells, plasma and platelets.
This process allows more of a single component to be collected. It takes longer than standard blood donation — typically up to two hours. After donating, you sit in an observation area, where you rest and eat a light snack. Never miss a story! Stay connected and informed with Mint.
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