The doctor of a patient treated for low testosterone was litigated against after the patient passed away under her care. With a history of high blood pressure and diabetes, the patient was placed on human chorionic gonadotropin, diet pills, a diet regime, and had ten Testopel testosterone pellets inserted into his subcutaneous tissue. By the time the man passed away, he had lost nearly thirty pounds in sixty days and was violently ill; upon admittance to the ER, he had a hematocrit of over sixty. He rapidly had a cardiopulmonary arrest, passing away soon after. The death certificate listed his immediate cause of death as hyperviscosity due to polycythemia as a consequence of elevated testosterone. In the consequent malpractice trial, a hematologist was needed to review the case and opine on causation.