usually in fact sellers, paid for their trouble and needing the money) to be tapped often rather than just a couple times per year. Giving up your plasma, for the good of others or for profit, doesn’t leave you anemic. You can go back and give again the following week. One disadvantage of the procedure—and it’s a huge one, but wasn’t recognized in the early days—is that a plasmapheresis machine, gargling your blood and the blood of many other donors over the course of days, can infect you with a blood-borne virus. This happened to hundreds of paid plasma donors in Mexico during the mid-1980s.
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