The Progesterone test is a blood test that measures the levels of Progesterone hormone in the body. Progesterone is a crucial hormone involved in the female reproductive system. It plays a vital role in regulating the menstrual cycle, preparing the uterus for pregnancy, and supporting early pregnancy. The test is often used to determine if a woman is ovulating, assess the function of the ovaries, monitor the health of a pregnancy, or investigate the cause of infertility. It can also be performed in men to evaluate certain conditions related to Progesterone production.