I just had a failed FET from a DE. My RE gave me the option of doing an ERA testing before another FET. I did some googling. ERA means Endometrial Receptivity Array. In a FET cycle, after we start progesterone, usually the transfer occurs at the 5th day. Apparently, some women were found to have a non-receptive uterine lining on the 5th day. Their window of implantation were shifted later (or earlier) in the cycle. The test is to find if I am one of them.
If you have done this test or have any insights on this test, can you please share with me? Is it a useful test? Thanks and good luck to everyone.