If you are considering IVF treatment , understanding IVF success rates is important to guide you in decision making . However , it can be confusing at times because there is no agreed standards in reporting “success” based on an IVF cycle pregnancy as there are many different variables used to describe the statistics , such as :
- Pregnancy rates may just be a urine test or a blood test for hCG (pregnancy hormone) as compared to a presence of gestational sac in the uterus by an ultrasound scan .
- Pregnancy rates may be based on per embryo transfer cycle or based on multiple embryo transfer from one egg collection .
It is therefore important to understand what part of the IVF treatment cycle a particular statistic is measuring as well as what is the definition of “successful pregnancy”.
Having the understanding of these statistics , there are other “prognostic” factors that need to be understood before you attempt to compare IVF success rates. These factors include :
- The women’s age
- Fresh versus Frozen Embryo transfer
- Underlying or potential reasons for the subfertility ( not commonly mentioned )
- The use of PGT
- Number of embryo (s) transferred in each transfer
The major contributory success rate of an IVF cycle depends on the age of the women undergoing treatment, as well as the cause of the infertility (if it’s known).