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Normal whole blood donation you bleed into a bag. Component donation, including plasma, they hook you up to a centrifuge which separates out the bits they want and the rest goes back into you.
I donate at Edgware and there are always people doing components. I did get invited to donate platelets a few years ago but the extra frequency and time didn't work for me then so I've not done the centrifuge thing.
It’s been ages since I’ve given blood. I can’t really recall the process even.
What differs? What sort of side effect does it have? I tested positive on 1st Jan only had mild symptoms (unsure if this is a factor)