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What is the purpose of the ERA test?

By Dr. Luis Rodríguez Tabernero.
Last Update: 08/26/2014

The ERA test of endometrial receptivity determines when is the best time for implantation.

The different phases through which the endometrium passes are regulated by the expression of a series of specific genes, and endometrial receptivity studies try to find out which genes are active in the implantation window.

For the ERA test, an endometrial biopsy is needed on the days we think are the implantation window, and the genes that are being expressed are compared with a pattern that is expressed in the implantation window of fertile women.

Sometimes the window of implantation is shifted and the best time to perform the embryo transfer is not 5 days after the ovarian puncture, but at another time. The ERA test is a tool that allows calculating the best moment for the transfer of the embryos in a personalized way for each woman, in order to try to coordinate the embryo quality with the best endometrial environment that can facilitate implantation and pregnancy.

Suggested for you: Endometrial Receptivity Array (ERA): Procedure and Success Rates.

Dr. Luis Rodríguez Tabernero
Dr. Luis Rodríguez Tabernero
Gynecologist
Degree in Medicine and Surgery from the University of Salamanca and Specialist in Obstetrics and Gynaecology via MIR. Dr. Rodríguez Tabernero is responsible for the Human Assisted Reproduction Unit of the Gyaecology and Obstetrics Department of the Hospital Clínico Universitario de Valladolid since 2013 and has also been working in the field of reproductive medicine since 2000.
Licence number:474705276
Gynecologist. Degree in Medicine and Surgery from the University of Salamanca and Specialist in Obstetrics and Gynaecology via MIR. Dr. Rodríguez Tabernero is responsible for the Human Assisted Reproduction Unit of the Gyaecology and Obstetrics Department of the Hospital Clínico Universitario de Valladolid since 2013 and has also been working in the field of reproductive medicine since 2000. Licence number:474705276.