If convalescent plasma is shown to work, much more of it may be needed, and supply could become a challenge, Bhadelia says. One plasma donation—the volume depends on the donor’s weight but it’s usually between 690 and 880 milliliters in the United States—is enough for just one or two patients, and the donor’s blood type needs to match the recipient’s. But recovered patients might be able to donate plasma multiple times. In New York City, there is now more than enough to go around, in part because thousands of members of the hard-hit Orthodox Jewish community have donated. … [Read more...] about Can plasma from COVID-19 survivors help save others?