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Success Rates
Pregnancy Statistics
Statistical indicators play an important role in selecting an IVF clinic. We in Scandinavia AVA-PETER work to increase the number of cycles every year, with 7000 cycles a year on average in our Saint Petersburg clinic.

All over the world, the THBR (Take Home Baby Rate) indicator is usually used to determine the success of ART (assisted reproductive technology). This ratio shows how the number the couples who initiated the IVF cycle relates to the number of successful pregnancies. Unfortunately in Russia, this indicator is irrelevant, since it is not the fertility specialist who manages the pregnancy, it is the gynecologist chosen by the patient. That makes him responsible for the success of the pregnancy.

Still there are other indicators that allow to see how well our doctors succeed in their field.
An effectiveness above 50 % is considered a very good result for ART programme. For Scandinavia AVA-PETER, the effectiveness reached 55.2 % in 2019.
Pregnancy rate
The onset of pregnancy depends on the well-coordinated work of the physician team, on the patient’s compliance and — the last but not the least — on the patient’s age. The older the patient is, the lower are the chances. We do not set age limit, because we want to help everyone dreaming of becoming parents. The programmes based on using patients’ own gametes show the following results:
The own gametes IVF-programmes effectiveness
Pregnancy rate after transfer, %
Woman age
Total (all ages)
For the previously frozen embryos, the probability for onset of pregnancy is:
Pregnancy rate after transfer, %
Woman age on the embryo freeze date
Total (all ages)
The effectiveness of the native egg donor IVF-programmes
We also have a native donor programme in place. This one is for women who cannot use their own eggs for IVF. We call donors “native” because they enter the programme at the same time as the patients do and undergo all the necessary procedures right here and right now, that allows us to use fresh oocytes for IVF.

The effectiveness of these procedures is:
Pregnancy rate after transfer, % (all ages)
The frozen donor eggs IVF-programmes effectiveness
The use of frozen donor eggs for the IVF cycle gives the same results as the native donor programme. Many years ago, scientists faced a challenge when freezing oocytes: due to the large amount of inner liquid the freezing produces crystals that can damage the integrity of the cell; now we can benefit from an advanced procedure of vitrification.

Rapid freezing allows to maintain the high quality of eggs, and the effectiveness of vitrified donor eggs IVF-programmes in our country is:
Pregnancy rate after transfer, % (all ages)
The effectiveness of the PGT (Preimplantation Genetic Testing) IVF-programmes
For the certain indications (namely, maternal age, history of unsuccessful IVF attempts or miscarriages, severe male factor infertility or other genetic disorders in parents that are undesirable to be passed along to the child), the doctor may opt for preimplantation genetic testing (PGT).
Our experience proves this to significantly increase the chances of IVF pregnancy:
Number of Babies Born after IVF
As a result of IVF programmes maintained in our clinic, more than 20,000 children have already been born. This number is still growing and we are sure that it will go higher because we strive to make the dream of as many patients as possible come true.
And they are thankful to us.
Thank you for choosing our clinic.
Everyday, we do our best to help you become parents.
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