To Ghost- FET number to transfer?

[Winterhopes]

Dear Ghost,

After a first failed IVF eSET of a perfect 5-day blast, we are planning a January FET. We have one 5-day and one 6-day frozen with vitrification and a very high survival rate post-thaw. I am 29 and have unexplained IF-- all our tests have been totally normal.

We are trying to decide whether to transfer one or both. In previous year's posts, I read that you said that Day 6 blasts should be equal to the Day 5 blasts in FETs. I have seen various clinical preg. success rates, from 35% all the way to "as good as fresh" which at my clinic for my age is over 60%. What do you think? And do you know why our first IVF would fail?

Every doctor thought I'd be successful and it's been 18 months of TTC...women 5-10 years older than me are all having successes while I'm not.

Thanks,
Winterhopes

[Ghost]

Dear Ghost,

After a first failed IVF eSET of a perfect 5-day blast, we are planning a January FET. We have one 5-day and one 6-day frozen with vitrification and a very high survival rate post-thaw. I am 29 and have unexplained IF-- all our tests have been totally normal.

We are trying to decide whether to transfer one or both. In previous year's posts, I read that you said that Day 6 blasts should be equal to the Day 5 blasts in FETs. I have seen various clinical preg. success rates, from 35% all the way to "as good as fresh" which at my clinic for my age is over 60%. What do you think? And do you know why our first IVF would fail?

Every doctor thought I'd be successful and it's been 18 months of TTC...women 5-10 years older than me are all having successes while I'm not.

Thanks,
Winterhopes

No way to know why your first transfer failed. Maybe the embryo, maybe the uterus. Those are the two primary suspects.

Ask for their FET implantation rate in your age group, based on fetal cardiac activity, not a "pregnancy rate". The implantation rate is more specific to how the average embryo performs, and is the most useful statistic for determining how many to transfer.

If your clinic REALLY has excellent success with thawed blasts, then you I'd seriously consider one embryo. If the implantation rate is over 40% per embryo, that is excellent by today's standards. If it's 30-40%, you still might consider single transfer. Below 30%, it may be in the range where you'd transfer two. Those are my arbitrary opinions. Your opinion may differ, and that's fine. Definitely get your RE's opinion.

This also depends on how you feel about twins, which may be different than how I feel about them.

Remember, you can always transfer the other one later.