ERA is an innovative test that helps pinpoint the exact time when your endometrium is receptive to embryo implanting. This test can help improve chances of pregnancy for those with repeated failed IVF.
ERA involves taking a small sample (biopsy) of endometrial cells at a particular time in your cycle. Cells in the endometrium produce certain types of genetic material during the window of implantation (WOI). An ERA can identify which endometrial cells are “Receptive” or “Nonreceptive” and whether your WOI is open or not.
With repeated tests your doctor can determine your precise WOI. We can then time your embryo transfer to the most optimal time to maximize chance of achieving pregnancy. An endometrium is receptive when it is ready for the embryo implantation. This occurs around days 19-21 in each menstrual cycle of a fertile woman. This period of receptivity is what we call the window of implantation.