DEAR DR. ROACH: I read that people are not being paid for donating blood anymore. Is this true? — R.F.T.
ANSWER: Yes. Blood donation is not compensated. Plasma donation, on the other hand, often is compensated. Plasma, which contains the proteins in the blood, can be highly purified so that there is no risk of infection, as opposed to blood — every precaution is taken to reduce infection, but it can never be brought to zero.
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