If you’re a couple with infertility considering IVF, you may have heard that genetic embryo testing is an option. There are different types of embryo testing with names like #PGD and #PGS
It has become really confusing. I am going to clear this up for you.
In the beginning, all embryo testing was called PGD which stands for Preimplantation Genetic Diagnosis
Later, when different types of tests starting becoming popular, some additional acronyms were introduced
PGD was used to refer to testing embryos for mutations one specific gene. A common example is the disease cystic fibrosis.
PGS was used to refer to testing that looked at the number of chromosomes that an embryo had. A normal, healthy embryo has 46 chromosomes but often times, embryos will have extra or missing chromosomes. PGS Testing for these missing or extra chromosomes is the most common type of embryo testing that is performed today.
When the technology for testing embryos improved, and we were able to look at all 23 pairs of chromosomes instead of 5 or 6 pairs, many doctors started using another acronym instead of PGS. the new acronym, CCS stands for comprehensive chromosome screening.
Recently, one of our professional organizations has advocated changing these designations again. Its enough to make your head swim!!
Today, most people still use PGD to refer to any type of embryo testing. If you are considering #IVF with embryo testing just make sure that you understand what you are testing for and that you and your doctor are on the same page.
Infertility TV is your weekly source for the best medical information if you have infertility, recurrent miscarriage or are just trying to conceive. (TTC). InfertilityTV covers infertility testing, fertility treatments such as Clomid, Follistim and Crinone and fertility treatments like IUI and IVF (in vitro fertilization)
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Dr Morris is a practicing IVF and infertility expert who sees patients at IVF! located in the Naperville Fertility Center.
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