Endometrial Receptivity Assay

What Is an ERA Test?

An endometrial receptivity array test is a form of biopsy intended to be taken at the optimal time for implantation. The tissue taken during this biopsy is then processed and analyzed for over 240 different chemical compounds that are expressed by endometrial tissue in the time frame of ideal implantation to assess the accuracy of an estimated window. With these results, doctors can then fine-tune timing for additional cycles to improve the likelihood of a positive outcome.

Why Is an ERA Test Necessary?

Traditionally, the reasons for the failure of an in vitro fertilization procedure have been difficult to ascertain. While doctors know that a positive uterine environment is required for implantation, the factors that influence a particular woman’s challenges can vary greatly. After several failed cycles of in vitro fertilization, most doctors will perform an anatomic assessment, tests for blood clotting, and genetic testing, but these basic exams don’t tell the whole story.

In general, around 40% of women find success in their first cycle of IVF and around 70% are pregnant after their third. However, this leaves around 30% of women who have spent significant time and money without seeing results. (Where did you get this data from) An ERA test can improve these odds, providing enhanced insight into complications that may be affecting conception. The chemical analysis involved in the test can identify whether the biopsy was taken at the proper time, or if it was late or early as well as by how many days. This can correct issues in timing, improving the environment of the uterus in future attempts.

What Is the ERA Success Rate?

When used properly, an ERA test can provide valuable information fertility doctors can use to correct the timing of IVF cycles. While very effective under certain circumstances, an ERA test will only yield meaningful results if the timing of implantation is a contributing factor in implantation failure. Approximately 25% of presumed normal patients and around 25% of patients with recurrent pregnancy loss are abnormal on this test and may see future success when timing is adjusted.

Do I Need an ERA Test?

ERA tests are designed for those who have experienced several unsuccessful IVF cycles in the past and would like to evaluate the influence of timing on implantation challenges. Your doctor can discuss your concerns with you and will let you know if an ERA test for in vitro fertilization will be beneficial in helping you make future plans for fertility treatments.

Dealing with infertility can be hard mentally, physically, and emotionally but Brown Fertility is here to make your journey to parenthood as easy as possible. The benefits offered by an ERA test can improve your chances of starting a family, offering insight into timing for additional IVF cycles to enhance potential success rates. Get in touch with us today in Jacksonville at or in Orlando to explore IVF and other approaches to targeting infertility.

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