Yeah it depends on why, but if they defer you on that day for BP or temp you can comeback the next day, but if you get rejected for the same thing you may have to wait a period of time. They will tell you.
It depends on why you were rejected. When you get what is known as a deferred, they will tell you why and when or if you can return to donate.
I'm not sure. I know that you can donate twice a week but that there has to be 2 Days Between Donations.
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