Why embryos fail, most of the time
The most common reason a transfer fails or a pregnancy ends early is a chromosomal problem in the embryo. It usually has nothing to do with anything you did. PGT-A exists to catch this before transfer instead of after heartbreak.
What the test involves
When embryos reach blastocyst stage, our embryologists take a small biopsy from each one, from the part that becomes the placenta rather than the baby. The cells are analysed for missing or extra chromosomes. Only embryos with a normal result are considered for transfer. The biopsy is performed inside our ESHRE certified lab and does not harm the embryo's development.
Who should consider it
We recommend PGT-A most strongly if you are over 35, if you have had two or more miscarriages, or if good-looking embryos have repeatedly failed to implant. In those situations the test tends to pay for itself in avoided cycles. If you are 28 with a first attempt ahead of you, we may well advise you to skip it. It is a tool, not a ritual.
Honest limits
PGT-A cannot guarantee a pregnancy, and it does not test for every genetic disease. What it does is stop you transferring embryos that were never going to work. Patients who have been through years of unexplained failure tell us the certainty alone was worth it.