Can your IVF success be improved with PGT?

Using PGT, the embryos can be checked for abnormal chromosome number (aneuploidy), which is a major cause of both implantation failure and miscarriage. This allows the doctor to transfer only healthy embryos into the uterus, thus improving the chances of IVF success.

However, it is not fool-proof. Even genetically-tested embryos sometimes fail to implant so you must weigh the cost carefully and discuss all possibilities with your doctor.

If you go a bit deeper into it, the value of PGT isn’t just theoretical—there’s some data behind where it actually helps.

Reduced risk of miscarriage

A lot of miscarriages are linked to chromosomal abnormalities, and that’s exactly what PGT screens for. Some studies have shown a noticeable drop in miscarriage rates when tested embryos are used. For example, one review reported rates dropping from around 28% to under 10% in certain groups. It’s not perfect, but it directly targets one of the main causes.

Lower chance of multiple pregnancies

Because you’re transferring an embryo that’s already been screened, there’s less need to transfer more than one to “increase odds.” That shift towards single embryo transfer is important, since multiple pregnancies come with higher medical risks.

Shorter time to pregnancy

Instead of going through multiple failed transfers, PGT can help reach a viable pregnancy sooner by filtering embryos earlier in the process. It doesn’t increase the total number of good embryos, it just avoids spending time on the ones that wouldn’t have worked.

Potential cost efficiency over time

Even though PGT adds an upfront cost, fewer failed transfers and fewer repeat IVF cycles can balance that out. Financially, it can make the process more predictable rather than open-ended.

More informed decision-making

Without PGT, embryo selection is largely based on appearance. With it, there’s actual genetic data guiding choices. It doesn’t guarantee success, but it reduces the guesswork in a process that’s already uncertain.

Overall, it’s less about boosting success rates in a straight line and more about reducing avoidable setbacks along the way.

PGT can definitely improve outcomes in some situations, but I think it is also sometimes oversold as a universal IVF success booster, which isn’t really accurate.

From what I’ve read and discussed with doctors, PGT is most useful when the main issue is embryo chromosomal abnormalities. So cases of advanced maternal age, recurrent miscarriage, repeated implantation failure, or known genetic concerns, it can reduce transfers of embryos unlikely to implant or continue.

But if someone is younger with good-quality embryos already, the benefit becomes less clear. It doesn’t magically “fix” embryo quality or guarantee implantation.

I've also read that embryos can also be lost during biopsy/freezing/testing decisions.

I think patients should ask clinics a very direct question:

“Does PGT improve LIVE BIRTH rates for someone with my exact age/history, or does it mainly reduce time-to-pregnancy and failed transfers?”

Those are not the same.