McLeod Health is testing convalescent blood plasma to treat critically ill Covid-19 patients. 

According to the center, the Infectious Diseases and Critical Care teams at McLeod Health are participating in this trial led and developed by the United States Government and Mayo Clinic.

The treatment they are trying is developed from the blood plasma of fully recovered COVID-19 patients is given to hospitalized patients with severe cases of COVID-19. 

https://www.wltx.com/article/news/health/coronavirus/sc-hospital-using-blood-plasma-to-treat-covid-19-patients/101-a4a26ea1-962d-4702-9452-1a09916ea7a8