Endometrial Biopsy or Dilation and Curettage

(D & C)

This test involves the microscopic examination of a scraping from the endometrium - the lining of the womb. This enables an assessment to be made of the influence of the hormone progesterone on the endometrium.

Progesterone causes regular and predictable changes in the structure of the lining of the womb, so microscopic evaluation is useful. Adequate levels of progesterone are essential for the critical phase of embryo implantation.