HemaCare is not a vampire, but it does need your blood to survive. A supplier of blood products and services to hospitals and researchers, the company collects whole blood from donors at donor centers and mobile donor vehicles and processes it into plasma and platelets used for blood transfusions. HemaCare has blood collection centers in California and Maine. The company is focused on broadening its global bioresearch products and services operations, which is its fastest growing and most profitable segment. It has sold off certain assets to help invest in that segment's growth.