sorry - some more questions on PGD
I'm in Melbourne with Melb IVF and I noticed that on their website they talk about PGD testing and go into specifics they can test for - they do not mention anything to do with chromosome 15. So I decided to take a look at what Monash's website says and they do specifically mention PGD testing for problems associated with chromosome 15. I'm wondering whether Melb IVF even offers this (and if not, why the difference)?
Also, Monash IVF (and Melb IVF for all their PGD procedures) say that they do PGD testing on day 3. Yet, I took a look at Sydney IVF's website and they do the PGD testing on day 5 and they explain it as follows: SIVF wait until the embryos have reached the optimum fifth day of development when they can have a hundred or more cells, and then remove three to four at a time. Other clinics conduct the biopsy at Day 3 of the embryos' development when they consist of just six to eight cells, and only a single cell is removed, greatly reducing the number of opportunities for success. [note - I'm not sure what they mean by "greatly reducing the number of opportunities for success - do they mean that doing the retrieval of cells when the embryo is only six cells there is a greater chance of damaging the embryo'?] By waiting until embryos have reached the blastocyst stage, Sydney IVF scientists can select cells from the trophectoderm, the part of the embryo that will go on to form the placenta. The inner cell mass, the part that will become the baby, is not touched.
This seems to be either a big difference in philosophy which goes on in all fields of Medicine - OR - a big difference in capabilities if it is usually thought that it is better to do PGD on day 5...but the Melb clinics for some reason can't or lose more between day 3 - day 5 than SIVF.
I'm really sorry for bombarding this thread with questions - but the way I make decisions is to gather as much info as possible. We are willing to travel and/or change clinics to increase our success...