In-vitro fertilization is a boon to mankind. It has been the best way to conceive for a couple or a single parent when the conventional methods of conception do not work due to underlying physiological issues in any or both the persons. It is an artificial fertilization method where ovum and sperms are united and fertilized in an externally-controlled environment to create embryos.

Factors influencing IVF success rate

This process is almost 6-8 weeks in duration. In this process, a woman has to go through different treatments to make her body ready for artificial conception. The IVF Success Rate depends on different factors. Find the information below to get the idea of success rate depending on age and number of embryos.

  • Age below 35 years

It has been found that the age factor of a woman is extremely influential in this aspect. The success rate is higher among women with age below or equal to 35 years. 32% of the cases achieve success and conceive on the first go. The natural conception rate of women within this age range is 20%. It also depends on the health condition of a carrier. Genetic conditions and family history will also be counted as a factor in this success rate.

For the first-timers, the success rate is 32%. For those women who have conceived once in a natural way, the success rate increases to 37%. The IVF cycle will work efficiently if there is a history of a successful pregnancy. This is quite helpful for those couples where the male is physiologically incapable of fertilizing the female in a natural insemination way.

Women under the age range of the 20s will have a higher rate of success. This rate can go up to 43%. The prime reason for such success rates is the condition of the female reproductive system. The CDC data suggests that women under the age of 35 years can easily conceive with the success rate ranging from 32% to 52% depending on their physiological conditions.

  • Age above 40 years

After the IVF Treatment is complete, the age range of 40 years and above might have a chance to conceive. As per the CDC, the IVF cycle works for the women in this age range by 20% success rate and the occurrence of pregnancy is 14%. As the age group propagates forward, the chances of success will automatically reduce. For instance, women aged 43 years will have a 3% chance of delivering a healthy baby.

  • Number of embryos

It also depends on the number of embryos counted for the IVF Treatment. The rate of success automatically increases with the number of embryos introduced in the system. It can also result in multiple births as well.


The IVF Success Rate depends on the factors mentioned above. It has been witnessed that the rate also depends on the infrastructure of an IVF facility. Choose a proper IVF clinic and enjoy parenthood.