A lot of people hear PGT and think:

“Okay, now we can know which embryo will work.”

It sounds like a clear answer.

Test the embryo.
Choose the normal one.
Then pregnancy should happen.

But PGT doesn’t work like a guarantee.

It checks for certain genetic or chromosome issues in the embryo.

That information can be useful.

Especially when there is age concern, repeated failure, miscarriage history, or known genetic risk.

But it doesn’t check everything.

It doesn’t fully measure implantation.

It doesn’t confirm the embryo will keep growing after transfer.

It doesn’t control how the uterus and embryo interact.

Then why do people still do it?

Because it can reduce some uncertainty.

Not all uncertainty.

That’s the important difference.

PGT can help identify embryos with better chances based on what it tests.

But even after testing, IVF still has steps that cannot be fully predicted.

So a “normal” result means something.

It just doesn’t mean everything.