Hi ladies, I’m wondering what dose of progesterone others have taken to prepare for FET?
After 2 failed transfers of good embryos and I wondered if low progesterone could be my problem so I did a mock cycle to see what was going on. I used the same dose (2x400mg cyclogest/day for 5 days) at the same point in my cycle as I did during my last 2 FETs.
The blood test results came back yesterday at 663nmol/l (or 208ng/ml). The normal range for women in the second half of their cycle is 5-20ng/ml so that’s really high. I’ve previously read that anything over 30 is good so at first I was happy, then I started wondering if it was too high.
I’ve just come across this study ncbi.nlm.nih.gov/pmc/articl... which suggests that serum levels over 20ng/ml on day of transfer are associated with lower pregnancy rates. The suggestion seems to be that too much progesterone makes the endometrium receptive too early so now I’m wondering if the dose is too high.
So, my question is what dose have others used when preparing for FET? My Dr told me that all clinics “everywhere in the world” use this dose - is that true? Has anyone had success with a lower dose?
Thanks for reading this far and sorry for the long post!