Quote:
Originally Posted by GP_Matt
I had a nurse tell me that the blood has to be out in a certain time frame and if it isn't they can't use it. (Or maybe they can only use the plasma)
Anyway, they hinted, but didn't outright tell me, to stop coming as my veins are small and my blood drains very slowly.
On a side note, a few years ago they announced that it was too much work to come to Grande Prairie to collect blood and so they were going to stick to places closer to Edmonton for their drives.
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I don't think it has anything to do with the blood itsself being useable. There is anticoagulant in the blood bag, so if there is not enough blood in the bag it cannot be given to someone else because there would be too much anticoagulant in there. If they overfill a bag I believe it is not usable either.
I believe the reason you get cut off after a certain amount of time has to do with the blood clotting in the tube/needle, but I could be wrong.