As the researchers all around the world work on developing a treatment for the COVID-19 caused by SARS-CoV-2 there is a discussion on using the age-old technique of purified blood plasma as a resort. Doctors in China have used the technique to treat severely ill COVID-19 patients. After discovering that the blood plasma from recovered people can be possibly used as a treatment a pharmaceutical company is on a drive to purify plasma from the blood of recovered COVID-19 patients. How does blood plasma treatment work? Blood plasma is the liquid part of the blood which has antibodies in it.