Explanation of IVF Success Rates

Explanation of IVF Success Rates

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When you visit the website of fertility clinic you will get a page which will show the success rate. Patients often wonder how does the success rate is determined. They need to get all the information to make the right decision. In this topic, we are going to explain the IVF success rate.

IVF success rate

One of the most common questions asked to IVF doctor is regarding the success rate. The success rate might seem different and confusing also. No doubt, there are simple ways to understand the difference in a better way. When you visit the IVF centre the doctor will let you know in detail the factors which influence the success rate.

Factors Influencing success rate to conceive with IVF

Regarding the IVF success rate, there is different information available. The success rate is dependent on different factors like the patient’s age, treatment type, and clinic quality. Also, the success rate is based on live births or clinical pregnancy.

Clinical Pregnancy (One of the following considerations should be met)

  • 20 weeks of pregnancy
  • Evidence through ultrasound of an intrauterine sac (with or without a fetal heart)
  • Miscarriage product examination reveals placental tissue
  • Diagnosing an ectopic pregnancy through laparoscopy or ultrasound.

Live birth

The baby is born live.

Important factors


Each IVF clinic gives the success rate differently. This is because the patient’s case is different but also the lab quality environment, staff experience, skills, fertility specialists, and embryologists are included.

Along with infertility causes and treatment plans are taken into consideration. Also, the policy of fresh or frozen embryos is another way to determine the success rate.


With the clinic success rate, there are different age groups. the chances of natural conception increases as the women age also men age can make a difference. The patient’s age 30 have 4 times higher success rate as compared to patients with age 40.

Treatment type

With every treatment type, the success rate will vary. In some clinics, the success rate is from the blastocyst transfer which means the embryo transferred to the uterus on day 5.

Before this transfer type, the technique named cleavage stage transfer was on the 2nd or 3rd day. Many clinics show the success rate based on these techniques.

Clinical pregnancy vs. live birth

In most clinics, the success rate will be dependent on 2 columns which include clinical and live birth pregnancy. The live birth rate can be lower due to the risk of miscarriage.

Additional factors

  • Genetic factors
  • Fertility history
  • Female partner age
  • Lifestyle factors like weight and smoking
  • Conditions affecting infertility
  • Egg quality
  • Quality of sperm
  • Processes in the laboratories
  • The skill of the treatment team

You can know more about the success rate by talking with your fertility doctor as they will explain to you according to your case.

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