6 replies to this topic

[Rosiebaby]

Hello,
I was wondering how many embryos actually go on to make a baby from 1 retrieval or IVF?
We had 8 good quality 5 day embryos from my first IVF and my 1st transfer was a success after transferring 2 5 day blasts.
But we then tried another 3 times FET and none of them worked.
So my question is, would it be realistic to say that usually either 1 or 2 embryos would go on to give you a bfp?

[lunaflame]

Over 3 IVF cycles, I have had 18 fertilized embryos total and only 6 of those made it to day 5.  2 of those 6 have been BFP's so far (but I still have 4 left frozen).

[GabyP]

Darn statistics, yet there is an online calculator in regards to the odds. Developed by researchers and factors in age of the eggs, number of attempts etc. 

[impatience]

I am not an RE, but I think the answer is going to depend on a number of factors - no one-size-fits-all formula. 

Egg/embryo quality, of course, is the big one. The biggest reason an embryo won't implant and/or turn into a baby is chromosomal abnormalities. Generally, the odds of an embryo being chromosomally abnormal go up with age, although there are other factors, that affect egg quality, too. A 25 year old woman might have seven normal blasts in a batch of ten, while a 45 year old woman might only have one or two in a batch the same number. 

Then, of course, there are factors that go beyond embryo quality such as endometrial receptivity and/or immune issues. A euploid (chromosomally normal) embryo typically has a 70ish per cent chance of implanting and resulting in a pregnancy, but that number will go up or down based on those factors.  

[Merry33]

There's too much variability (diagnosis, age, egg/sperm quality, protocol, etc) in this to give a correct answer.
Some people are very successful through IVF and others are not.
We only got one viable pregnancy from 3 fresh and one frozen cycle.

[ociwoman]

Just to chime in here, we used a 25 year old proven egg donor and my dh's sperm (no issues with his fertility), and from our fresh donor cycle we eight 5-day blasts. Only one stuck and gave us our daughter... It's truly a matter of many many factors....

[Butterfli]

How long is a piece of string? Too many variables. If you look at my siggy first cycle - 5 embryos no baby. 2nd cycle, 4 embryos - 1 baby, third cycle 4 embryos - used two for my second son and two in the freezer.

If you looked at everyone's journey I highly doubt you'll find any pattern to it.
Good luck!