Taking blood samples like they do for studies is a whole different animal than taking a pint for transfusion.Amethyst Wind said:I've tried in the past solely to find out my blood type (it isn't listed on my birth certificate and I have to pay to find out from the NHS which I refuse to do - think I should contact the NSA? They might know) but I was turned away because I apparently have non-compatible veins, even though I have done a 4-day clinical study where I gave blood several dozen times.
I once took 16 samples from a tiny young woman who had reached 3rd stage evaluation for marrow donation, and I
*shudder* at the thought of trying to get the much larger needle used for a pint donation in to any of her veins.