Daxor Corporation is an investment company with medical instrumentation and biotechnology operations. The Company engages in the short selling of stock. The Company maintains a diversified securities portfolio, which consists primarily of the common and preferred stocks of electric utility companies. It has approximately 70 Blood Volume Analyzers (BVA)-100. It also sells Volumex Kits. The semi-automated BVA provides blood volume measurements in human body, which are fundamental tools for diagnosis and treatment in a range of medical and surgical conditions, including congestive heart failure, hypertension, syncope, anemia in cancer patients, kidney failure and hyponatremia. The BVA-100 measures blood volume in approximately an hour. Its IDANT division provides semen banking services, which include anonymous donor semen and semen storage; autologous blood storage; andrology services, which include semen analysis and sperm washing, and general lab testing.