“Potential stool donors currently must fill out a questionnaire similar to that of blood donors, and undergo blood and stool tests prior to their donation to "make sure you aren't giving anyone stool that could harm them," McSweeney said.
For example, the first U.S. stool bank, OpenBiome, requires that donors fill out a 200-point clinical questionnaire and take more than two dozen blood and stool screens.
Dr. Colleen Kelley is an assistant professor of gastroenterology with the Warren Alpert Medical School of Brown University, in Providence. "There is a very high bar to be a stool donor," she said. "OpenBiome rejects 97 percent of the donors who apply."
Read more: https://health.usnews.com/health-care/articles/2018-06-05/are-you-a-prospective-poop-donor