An improved method was described including cosecutively the collection of blood from the donor by two times, the decantation of blood plasma by high speed cryocentrifuge, the isolation of plasma and its immediate cryoprecipitation, then the perfusion of the rest of blood back to the donor circulation. The process takes only 60 minutes with an absolute safety and comfort. 20 regular blood donors at the Blood Transfusion Department of National Institute of Pediatrics had took the advantage of this technique.
Plasma ; Tissue Donors ; blood

The solutions of collection and use of human plasma were studied to ensure the safety and non- infections of HIV, HBV and HCV in the blood transfusion department of National Institute of Pediatry. Method: Model of like ladder rung down (3 times of tests: first day; 45th day and 90th day). By this method, the HIV in “ window period” will be certainly found, concurrently the HBV and HCV will be tested secondly and thirdly and safety will be assure
Plasma ; HIV ; Hepatitis B virus ; Hepacivirus