Another BargeMay 17 2012 at 12:13 AM
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|LadyG (no login)|
Response to Tenacious B, I need input on genetic testing approaches
Having just been thru the decision of whether to freeze our 3 blasts and bank for future CCS testing with the next batch we learned the following:
*CCRM were not fond of the two time freezing and thawing, more because they have only done this about 25 times and do not have any long term data on whether this has any impact on babies born from such embryos
*They recommended freezing at day 3, then pooling that batch with the next by unfreezing the day 3 group and letting them all grow to blast together and testing the blasts that make it. They will not biopsy even on day 3 as one cell from an 8 cell embryo is 12% of that embryo - too stressful on the embryo for their liking. This still would involve freezing twice those that make it to blast from the first batch, which I forgot to ask them about, but I will inquire about that next time I speak with them.