Endometrial receptivity array

Endometrial receptivity array (ERA) is a test that claims to find the optimal time for an embryo to be transferred into a woman’s uterus for the embryo to implant, known as the window of implantation. ERA involves taking a biopsy of the endometrial lining of the uterus and testing the tissue to see which genes are expressed. When combined with a computational predictor these results indicate when the endometrium may be most receptive to an embryo implanting. The endometrium will be categorised as either receptive, pre-receptive, or post-receptive.