Ambrosia Medical (plasma transfusion)

Ambrosia Medical is a San Francisco-based blood services company, founded in 2016 by Jesse Karmazin, a Stanford graduate, that offers "young blood" (the blood of persons aged 16-25) plasma transfusions, promoting such treatments as having anti-aging properties and other health benefits. Participants in a preliminary trial of the treatment paid $8,000 per 1.5 litres of plasma; the first public prices were set at $8,000 per litre, or $12,000 per two litres. The U.S. Food and Drug Administration stated in February 2019 that "there is no proven clinical benefit of infusion of plasma from young donors to cure, mitigate, treat, or prevent these conditions, and there are risks associated with the use of any plasma product;" Ambrosia briefly suspended operations in response, ultimately re-opening its clinic in November 2019 and resuming transfusions.