Some IVF clinics copy our services, texts, presentations and arrange seminars in the same locations. Please be attentive to which seminar you register and which clinic you land in. Dr. Olga Zaytseff and her team runs own clinic O.L.G.A. in St. Petersburg and does not work for any other clinics. Lectures at our seminars are personally done by Dr. Olga Zaytseff


At O.L.G.A. Fertility Clinic we like to, where possible, use only natural fertilization methods in our IVF cycles and to only perform ICSI if and when there is no other option to achieve successful fertilization.

O.L.G.A. Fertility Clinic is famous for its experienced embryologists, who are renowned in their experience with successful ICSI procedures. O.L.G.A. Fertility Clinic embryologists were the first ones in Russia to achieve life birth after ICSI.

We are very happy and proud of our results for both IVF and ICSI treatments with a woman's own eggs.

So ICSI is a laboratory method to overcome fertilization failure due to male factor infertility, even if it is severe. Just several sperm cells may be enough to achieve fertilization via ICSI. However as soon as fertilization of the eggs is achieved through ICSI and embryos develop further, clinical pregnancy rates depend on the female age

ICSI procedure schematic

Fig.1 ICSI procedure schematic.

  1. Needle point
  2. Pipette
  3. Oocyte
  4. Spermatozoon

In the table below we are proud to present our clinics ICSI results with own eggs in the different patient groups. We can say with all certainty that these high success rates are due to the individually designed pretreatment and stimulation protocols of our clinic. Also shown in the table are those patients of advanced reproductive age and that have not received PGS, as you can see these results are also excellent!

Clinical pregnancy rates in ICSI cycles with own eggs according to female age, 
(fresh ET, 2013 and 2014)

Age of patient





Clinical pregnancies

Clinical pregnancy rate (CPR)


Clinical pregnancies

Clinical pregnancy rate (CPR)






















As you already know the success rates of IVF and ICSI with own eggs decline with the age of a woman. This happens due to the egg aging process which starts after 30 and results in chromosome abnormality in more and more eggs, which makes them incapable of creating a healthy ongoing pregnancy and/or a healthy child.
In women:

  • 20-25% eggs are already abnormal in the age of 30
  • 40-45% of eggs are abnormal in the age of 35
  • 70-75% of abnormal eggs in the age of 40
  • Almost all eggs are abnormal after the age of 42

Interested in receiving treatment at our clinic and being able to access our excellent levels of care and success?

Request a call

Det finns inga frågor som är för små eller obetydliga för mig. Jag här för att diskutera dem med dig

+46 842 00 2745

Må-Fre 10:00-11:30 svensk tid
Maria Jeffs,
patientsamordnare för Sverige

Maria Jeffs

"... När Millenniumskiftet kom 2000, minns vi alla vad vi gjorde, eller hur? Jag hade cancer, Hodgkins lymfom ... Och nu när jag står här 17 år senare förstår du att det gick bra! Förutom en viktig sak ... "


“…When I left the clinic and walked down the Nevsky Prospect I knew I was pregnant — and the feeling was right! 9 month after her visit at the AVA Clinic Alexander was born!”

Ewa and Sten

Different life stories, but the same dreams for a baby bring Ulrika from Norway and Willeke from Netherlands to St. Petersburg...

Having questions? Ask our doctors now!

A blog by Tone Bråten

A blog — to help you on your journey to become parents!

Our patients tell their stories

  • Willeke and Mario from Netherlands come to AVA-Peter for egg donation treatment… Enjoy this touching and sincere documentary by Jorien van Nes
    Olga is the miracle doctor who gives baby guarantee, Sweden. 6 August 2019. Text & Malin Aunsbjerg
    Cilla Holm became a mother on her own – this is her new Liv (life)
    Dagens Nyheter, Sweden. 7 May 2019
    Russian baby guarantee is the Swedes’ last chance
    Svenska Dagbladet, Sweden. 7 April 2019
    Mum through embryo donation
    Marie Granmar is my very dear patient from more than 8 years ago. Please listen to Marie’s interview on TV4 7 March 2019 in Sweden
    "I became pregnant with an embryo adoption”
    One more story about our dear patient Cilla Holm by Tara Magazine, Sweden
    Titiyo became this year's Comeback Mum: "I've broken the norm"
    Monika and André pay 240,000 SEK for having a child
    "Had to travel abroad to get pregnant after 8 IVF attempts in Norway"
    Interview with our patient Elin Renate by TV2 Norway
    Report on us on Norwegian Television TV 2
    Enjoy our dear patient Cilla's story, who has been interviewed by the "Dagens Nyheter", daily newspaper in Sweden
    Report on us and our dear patient Hillevi on SVTPlay & SVTNews