What is ERA?
This a genetic test performed to assess the readiness of the endometrial lining to accept the fertilised embryo
It tests about 236 genes identified to be important for the process of implantation to occur
Procedure :
It is performed by first preparing the endometrial lining exactly as we would for an actual frozen embryo transfer
Once the lining of a satisfactory thickness is achieved,progesterone injections are started for five to six days and one day after the course of progesterone is over,biopsy of the lining is taken in the OPD and sent for analysis.
ERA (Endometrial Receptivity Analysis) is a diagnostic test used to determine the optimal timing for embryo transfer during IVF. The test analyzes gene expression in the uterine lining to identify the most receptive period for implantation, helping doctors personalize embryo transfer timing.
Successful pregnancy through IVF treatment depends not only on embryo quality but also on the timing of embryo transfer. Even healthy embryos may fail to implant if transferred when the uterus is not receptive.
To address this challenge, fertility specialists may recommend the ERA test, a diagnostic procedure designed to identify the optimal implantation window. This test helps doctors determine the precise timing when the uterine lining is most receptive to an embryo.
Understanding the ERA test can help patients undergoing IVF, particularly those who have experienced repeated implantation failure, explore more personalized fertility treatment options.
The ERA test (Endometrial Receptivity Analysis) evaluates whether the uterine lining is ready for embryo implantation.
The test examines the activity of specific genes in the endometrium (uterine lining). These genes indicate whether the lining is:
By analyzing this information, doctors can determine the most appropriate time for embryo transfer.
The ERA test is mainly recommended to improve embryo transfer timing during IVF.
Doctors may recommend ERA when:
This test helps optimize treatment strategies for better IVF outcomes.
ERA testing is usually recommended for patients who:
The test is not required for every IVF patient but may be useful in specific clinical situations.
The patient undergoes a mock cycle similar to an IVF preparation cycle. Hormonal medications are used to prepare the uterine lining.
A small sample of tissue from the uterine lining is collected using a thin catheter.
The biopsy procedure usually takes only a few minutes.
The tissue sample is sent to a specialized laboratory where gene expression related to implantation is analyzed.
The results determine whether the uterine lining is:
Doctors use this information to personalize the embryo transfer timing.
ERA testing supports personalized fertility care by:
By adjusting the timing of embryo transfer, doctors aim to improve implantation potential.
ERA testing may be useful for patients who:
Your fertility specialist will determine whether ERA testing is appropriate based on your treatment history.
The ERA biopsy procedure may cause mild discomfort similar to menstrual cramps. The discomfort typically lasts only a short time and resolves quickly.
Most patients are able to resume normal activities shortly after the test.
The ERA test is generally safe. Possible side effects may include:
Doctors provide instructions to minimize these risks.
Different diagnostic tests evaluate different aspects of fertility.
Test | Purpose |
HSG | Detect tubal blockage |
SSG | Evaluate fallopian tubes |
Hysteroscopy | Examine uterine cavity |
ERA Test | Identify optimal implantation timing |
Each test provides unique information used to guide fertility treatment.
No fertility test can guarantee pregnancy. The ERA test simply helps identify the most receptive time for embryo transfer.
Success still depends on several factors including:
The report is usually given as receptive or non receptive
If non receptive,it may be;
Pre-receptive- meaning the timing is too early and the transfer needs to be delayed
Post-receptive-meaning the timing is too late and the transfer timing needs to be advanced
This is not routinely performed or advised in all patients but mostly in those with repeated implantation failures to check their window of implantation and perform a personalised embryo transfer at a suitable time .
