Monday, October 6, 2008

3 dt vs 5dt

There has been a lot of talk about what is the best time to transfer fertilized eggs back into the mom, 3 days or 5 days. Most of the research I found depends on the maturity of the eggs, how many eggs were fertilized, and the clinic.

For most clinics, they will do a 3 day transfer no matter what condition just because it works best for them. Other clinics it will depend on how many eggs were fertilized. If you have a lot of fertilized eggs and they are all dividing at the same rate, the clinic may wait 2 more days to see if some divide better and have less fragmentation. Then they will transfer the best back into the uterus.

If you don't have many eggs that are high quality, the clinic may go ahead and do a 3 day transfer. This is because some clinics believe that the eggs will do much better in the uterus where they belong than in a dish.

One research did conclude that the success rate is about the same for both 3 day and 5 day transfers and the twin rate is also the same.

My suggestions is go with your doctors recommendation. In most cases they will know what is best. Below are some articles that I found out on the web. I hope this helps.

Sources:

Human Reproduction

http://www.infertilitydoctor.com/lab/lab_embryo_blastocyst.htm

http://www.sharedjourney.com/articles/3vs5.html

Advances Fertility Center of Chicago

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