The Progesterone Serum test is essential for understanding your menstrual cycle and supporting a healthy pregnancy. Progesterone is the "pro-gestation" hormone, released after ovulation to prepare your uterine lining. This test is crucial for confirming if ovulation has occurred, a key step in any infertility investigation. It is also a vital test that is monitored closely during the early stages of pregnancy to ensure the levels are high enough to support a viable pregnancy. A simple blood draw provides this critical, time-sensitive information, offering clear answers for your fertility and pregnancy journey.