Biotest Aktiengesellschaft develops, manufactures, and sells biological and biotechnological pharmaceutical products in Germany and internationally. It operates through Therapy, Plasma & Services, and Other segments. The company offers its products in haematology, clinical immunology, and intensive care medicine areas. Its products include Haemoctin and Vihuma for the treatment of haemophilia A acute therapy and prophylaxis; and Haemonine for haemophilia B acute therapy and prophylaxis. The company's products also comprise Cytotect for cytomegalovirus infections; Fovepta for hepatitis B prophylaxis in neonates; Hepatect for prophylaxis of hepatitis B reinfection; Intratect and IgG Next Genration for primary immune and secondary antibody deficiency syndromes and autoimmune diseases, as well as neurological indications; Varitect for the treatment of varicella zoster virus infections; and Zutectra for hepatitis B re-infection prophylaxis after liver transplantation. In addition, it provides Albiomin and Biseko to restore and maintain circulating blood volume; Cofact for the treatment of clotting factors deficiency; Fibrinogen to treat congenital and acquired fibrinogen deficiency; Trimodulin for the community-acquired pneumonia and COVID-19; Anti-SARS-CoV-2 hyperimmunoglobulin for COVID-19 treatment; and Pentaglobin to treat bacterial infections. The company was formerly known as Biotest Serum-Institut GmbH and changed its name to Biotest Aktiengesellschaft in 1986. Biotest Aktiengesellschaft was founded in 1946 and is headquartered in Dreieich, Germany. Biotest Aktiengesellschaft operates as a subsidiary of Tiancheng (Germany) Pharmaceutical Holdings AG.