IVF ERA Test for Embryo Transfer Timing

The Endometrial Receptivity Analysis (ERA) test assesses gene activity in the uterine lining and is offered by some clinics to help plan embryo-transfer timing. It has not been shown to improve the chance of having a baby for most patients. It cannot ensure implantation or pregnancy success. Ask your clinician whether the result would change your treatment plan and what alternatives are available. The ERA test involves the following steps:

Endometrial biopsy: A small sample of the endometrial tissue is collected through a minimally invasive procedure called an endometrial biopsy. This procedure is typically performed in the cycle preceding the IVF cycle or during a mock cycle, which simulates the hormonal conditions of a treatment cycle.
Gene expression analysis: The endometrial sample is sent to a specialized laboratory to analyze the expression of specific genes associated with endometrial receptivity. The test results can classify the endometrium as "receptive" or "non-receptive" based on the gene expression patterns.
Personalized embryo transfer: Based on the ERA test results, the fertility specialist can adjust the timing of embryo transfer to coincide with the patient's customized window of implantation. This tailored approach increases the chances of successful implantation and pregnancy.

The ERA test can be particularly beneficial for women who have experienced recurrent implantation failure or multiple unsuccessful IVF cycles despite having good-quality embryos. By identifying the optimal timing for embryo transfer, the ERA test can improve these patients' chances of a successful pregnancy. However, it's essential to consult a fertility specialist to determine whether the ERA test suits your specific situation and IVF treatment plan.