Although we strive for multiple embryos in stimulated IVF, sometimes we loose track of the concept that it really takes just a single embryo to make a baby. I have a current patient who went through IVF with PGS (preimplantation genetic screening) and had multiple grade AAA blastocysts for embryo biopsy on day 5. Interestingly, only a single embryo of all these normal looking blasts was genetically normal. We transferred that single embryo and now...
