Progesterone

The progesterone test is used to measure the amount of progesterone in your body. Typically, this test is performed as a routine part of pregnancy monitoring, as progesterone is the hormone that helps prepare the body for pregnancy. Low progesterone levels can indicate problems in the early stages of pregnancy since the developing placenta produces this hormone in relatively large amounts.

However, the test can also be used to help determine whether or not a woman has ovulated, as well as help determine the cause of abnormal uterine bleeding in non-pregnant women.