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1. Donate plasma. For those who barely made it through science class, plasma is the liquid part of the blood that carries the red and white cells. Mostly made up of water and dissolved proteins, plasma is used for a variety of medicines, medical treatments and medical research. How much will you get paid? It varies, but you can expect to make between $15 and $40, depending on how much you weigh. The heavier you are, the more you make. Every plasma center is different, and there are more than 500 for-profit plasma centers throughout the country. How fast will you get paid? Pretty fast. On your first visit, you'll be given an examination to make sure you're healthy enough to donate, which will add a little extra time. After that, expect to donate plasma for approximately an hour. And you are donating it; generally, plasma centers state that they pay people not for their plasma, but their time. In Slyker's case, she says the lab technician scans the label ...