Normal Human Serum
U.S. sourced, ideal for those who seek an uncompromising quality. Manufactured from individual units of "off clot" serum (serum collected from spontaneously clotted whole blood). Each Donor used in the preparation of the product was tested and found negative for HIV-1/2, HCV, HBsAg, Hiv-1AG or HIV-1NAT, ALT, and a test for Syphilis by FDA approved methods.