amount of time before a person can donate blood again
We collect about 450 ml (a pint) of blood during a single blood donation. The plasma portion of your donation is replaced within hours and the platelet portion within days. Red blood cells are replenished in about 56 days, which is why the frequency of donation is once every 56 days. But there are other ways you can help if you want to get involved with Canadian Blood Services before you turn 17. Find out how to become a volunteer or organize a high-school blood clinic by emailing us at feedback@blood.ca or calling 1 888 2 DONATE (1-888-236-6283). You must wait a minimum of 56 days between whole blood donations. You must wait at least 7 days after donating blood before you can donate platelets. After an automated double red cell collection, you must wait 112 days before donating again. You can donate platelets once in a seven day period and up to 24 times a year. You must wait at least 72 hours after donating platelets before donating whole blood. After an automated double red cell collection, you must wait 112 days before donating again. In any eight (8) week period, you can make one blood donation and one platelet donation or six (6) platelet donations. If a person is to be deferred, his or her name is entered into a list of deferred donors maintained by the blood center, often known as the deferral registry.. If a deferred donor attempts to give blood before the end of the deferral period, the donor will not be accepted for donation. A blood pressure cuff will be placed on your arm to maintain a small amount of pressure during your donation. The cuff is not used to measure blood pressure. Your arm will be thoroughly examined to find a suitable vein before being cleaned with an antiseptic sponge. This kills normal bacteria (germs) on the skin. Sorry, you are ineligible to donate. Thanks for your interest, but you can't donate until you're 16. Register below and we'll contact you to arrange an appointment after your 16th birthday. Find out more about age restrictions. If you want to know whether a particular medication might keep you from being eligible to donate, you can call us at 1 888 2 DONATE (1-888-236-6283). You can still give blood when taking certain medications: in many cases, it isn’t the medicine but rather the reason for taking it that may be of concern. The minimum period between whole blood donations is 56 days, but for many donors it can be much longer. Because a lot can happen between donations, we are required to treat every donation as a separate event. For the safety of the blood supply and potential blood recipients, we have to take maximum caution and ask the questions every time. 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. 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. It's important to read this every time you attend, because advice does change. We must give you sufficient information so that you can make an informed choice, on the benefits and risks of donating blood and samples for testing. We will provide 500ml of fluid just before you donate. By drinking this over about 5 minutes, it will help with your wellbeing during and after donation.
112 days