Endometrial biopsy, the sampling of tissues from the lining of the uterus, is used to demonstrate the action of hormones and the presence of inflammation at the site where embryos implant into a woman’s body.

The biopsy will demonstrate abnormalities of ovulation which might require hormones or fertility drugs to correct. Such abnormalities may influence your ability either to become pregnant or to hold a pregnancy. Polyps, infections and precancerous changes in the lining of the uterus may also be identified.

In order to obtain the biopsy your doctor will pass an instrument into your uterus at a time when, in theory, you might be pregnant. The chance that a biopsy will interrupt a pregnancy is low. The procedure does not cause a baby to be born abnormally or with defects.