hi, jbear. when i did a round at the end of 2012 I don't think they froze them before testing. I had around 6/7 that were suitable for testing (from about 12 eggs retrieved), and then I had a couple from a leftover over cycle that were thawed out and added to the bunch (they turned out to not be suitable). I was lucky enough to have 2 pgd embryos from that, 1 was ds & one is frozen. maybe if you only get a few embryos from an egg collection, they'll freeze them, do another round & test them altogether? rather than just test 2/3 eggs at a time. hopefully your nurse can answer your questions more precisely! keep updating... ;-)