There is little information about the long-term consequences of frequent plasma donations. Some scientists argue that a donor’s antibodies should be tested after every fifth donation, and some European countries like Germany require this. But the FDA in a statement defended its requirement that levels be checked every four months, saying, “We recognize that regulators in other countries may reach different regulatory conclusions even when considering the same data.”

Genesis keeps losing weight, leaving her perilously close to the 110-pound minimum required for donation. To avoid getting turned away at the clinics for being underweight, which has happened in the past, Genesis said she regularly fools the scales by putting water bottles in her pockets. Her trick has never been noticed.

When our reporters asked Genesis to get her blood levels examined, the lab results confirmed what Genesis felt. The test showed a dangerously low immunoglobulin G level. According to Paul Strengers of the International Plasma Fractionation Association, a trade group for not-for-profit collectors of blood plasma, the loss of antibodies can damage the immune system and lead to serious infections like pneumonia. The doctor who conducted the blood tests suggested that she stop donating plasma until her body is fully recovered. But, Genesis said, “stopping is a luxury I cannot afford.”

by Stefanie Dodt and Jan Lukas Strozyk, ARD German TV, and Dara Lind, ProPublica