The chance of success with IVF depends above all on the woman's age. At our clinics in Norway it ranged from 21% to 72% per attempt in 2025, depending on age and how you measure. This page shows our actual figures, how to compare them with UK and US clinics, and what they mean if you travel to Norway for treatment.
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Most people reading this page want to know one thing: how likely is it that IVF will give you a baby? The honest answer depends on how success is measured, so we show both a positive pregnancy test and a clinically confirmed pregnancy for every age group, which lets you compare us fairly with clinics in the UK or the US.
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We report two measures for each treatment, because they answer two different questions.
A positive pregnancy test is an hCG blood test about 10–14 days after the embryo is transferred. It is the first sign the embryo has implanted, but it also includes early pregnancies that do not continue.
A clinical pregnancy is an ongoing pregnancy confirmed by ultrasound at around week 6–7, with a heartbeat. It is the more reliable of the two, and the one to use when you compare clinics.
We also separate fresh cycles (the embryo is transferred in the same cycle as the egg retrieval) from frozen cycles (a previously frozen embryo is thawed and transferred, often called FET or FER).
The figures are based on completed treatments at Klinikk Hausken in 2025, grouped by the woman's age at the start of treatment. For each age group we show positive pregnancy test and clinical pregnancy, for both fresh and frozen cycles.
In general, women under 30 have a better chance of success with fertility treatment than older women, because fertility is at its highest. The success rate still varies with the cause of infertility, the type of treatment and individual circumstances.
Positive pregnancy test after fresh embryo transfer: 67% of our fresh embryo transfers in women under 30 gave a positive pregnancy test (hCG blood test) about 10–14 days after the transfer. This is the first sign that the embryo has implanted, but the figure also includes early biochemical pregnancies that do not necessarily continue.
67% positive pregnancy test after fresh embryo transfer, women under 30, Klinikk Hausken 2025.
Clinical pregnancy after fresh embryo transfer: 58% of fresh transfers led to a clinically confirmed pregnancy, meaning a heartbeat was detected on ultrasound at around week 6–7. This is a more reliable measure of actual pregnancy than the hCG test alone.
58% clinically confirmed pregnancy after fresh embryo transfer, women under 30, Klinikk Hausken 2025.
Positive pregnancy test after frozen embryo transfer: 72% of frozen embryo transfers gave a positive pregnancy test. Frozen transfers often have a slightly higher success rate than fresh ones, because the uterus can be optimally prepared before transfer without hormone stimulation at the same time.
72% positive pregnancy test after frozen embryo transfer, women under 30, Klinikk Hausken 2025.
Clinical pregnancy after frozen embryo transfer: 63% of frozen transfers led to a clinically confirmed pregnancy with a heartbeat on ultrasound.
63% clinically confirmed pregnancy after frozen embryo transfer, women under 30, Klinikk Hausken 2025.
Women aged 30 to 34 still have reasonably good chances, although they gradually decrease with age.
Positive pregnancy test after fresh embryo transfer: 53% of our fresh embryo transfers in women aged 30–34 gave a positive pregnancy test 10–14 days after the transfer.
53% positive pregnancy test after fresh embryo transfer, women aged 30–34, Klinikk Hausken 2025.
Clinical pregnancy after fresh embryo transfer: 46% of fresh transfers led to a clinically confirmed pregnancy with a heartbeat on ultrasound at around week 6–7.
46% clinically confirmed pregnancy after fresh embryo transfer, women aged 30–34, Klinikk Hausken 2025.
Positive pregnancy test after frozen embryo transfer: 64% of frozen embryo transfers gave a positive pregnancy test. Here the chance with a frozen transfer (FET) is clearly higher than with fresh cycles in the same age group.
64% positive pregnancy test after frozen embryo transfer, women aged 30–34, Klinikk Hausken 2025.
Clinical pregnancy after frozen embryo transfer: 52% of frozen transfers led to a clinically confirmed pregnancy.
52% clinically confirmed pregnancy after frozen embryo transfer, women aged 30–34, Klinikk Hausken 2025.
For women aged 35 to 39 the chances gradually decrease, because fertility naturally declines with age. In this age group, frozen cycles raise the result considerably compared with fresh cycles.
Positive pregnancy test after fresh embryo transfer: 49% of our fresh embryo transfers in women aged 35–39 gave a positive pregnancy test.
49% positive pregnancy test after fresh embryo transfer, women aged 35–39, Klinikk Hausken 2025.
Clinical pregnancy after fresh embryo transfer: 37% of fresh transfers led to a clinically confirmed pregnancy with a heartbeat on ultrasound.
37% clinically confirmed pregnancy after fresh embryo transfer, women aged 35–39, Klinikk Hausken 2025.
Positive pregnancy test after frozen embryo transfer: 59% of frozen embryo transfers gave a positive pregnancy test, ten percentage points higher than for fresh cycles in the same age group.
59% positive pregnancy test after frozen embryo transfer, women aged 35–39, Klinikk Hausken 2025.
Clinical pregnancy after frozen embryo transfer: 47% of frozen transfers led to a clinically confirmed pregnancy.
47% clinically confirmed pregnancy after frozen embryo transfer, women aged 35–39, Klinikk Hausken 2025.
For women aged 40 or over the chances fall considerably, because fertility declines and the risk of chromosomal abnormalities in the egg increases.
Dr Hausken often makes the same point in clinic: 21% per fresh attempt is a real chance, and the 79% where it doesn't happen is just as real. Both numbers are true. You deserve both to make an informed choice about how many attempts you want and whether to consider alternatives.
Positive pregnancy test after fresh embryo transfer: 33% of our fresh embryo transfers in women aged 40 or over gave a positive pregnancy test.
33% positive pregnancy test after fresh embryo transfer, women aged 40 and over, Klinikk Hausken 2025.
Clinical pregnancy after fresh embryo transfer: 21% of fresh transfers led to a clinically confirmed pregnancy with a heartbeat on ultrasound.
21% clinically confirmed pregnancy after fresh embryo transfer, women aged 40 and over, Klinikk Hausken 2025.
Positive pregnancy test after frozen embryo transfer: 43% of frozen embryo transfers gave a positive pregnancy test. In this age group too, frozen transfers are clearly ahead of fresh cycles.
43% positive pregnancy test after frozen embryo transfer, women aged 40 and over, Klinikk Hausken 2025.
Clinical pregnancy after frozen embryo transfer: 28% of frozen transfers led to a clinically confirmed pregnancy.
28% clinically confirmed pregnancy after frozen embryo transfer, women aged 40 and over, Klinikk Hausken 2025.
Frozen transfers gave a higher chance than fresh ones in every age group, because the uterus can be prepared without the hormone stimulation of the same cycle. For someone travelling to Norway, there's a practical side too: good embryos from one egg retrieval can be frozen and transferred later. That usually means a much shorter trip than the first one, and another chance without starting again.
Success rates are only comparable when they measure the same thing. Before you compare, check four things:
In the UK, the HFEA publishes success rates for every licensed clinic, mainly as births per embryo transferred. In the US, SART and the CDC publish clinic data, mainly as live births per started cycle or egg retrieval. Our figures above are clinical pregnancies, an earlier checkpoint than birth, so they will look higher than a live-birth figure for the same age group. That's not a better result, just a different measure. Live birth rates for our 2025 cohort will be added once every pregnancy has been followed up.
In the UK, fertility clinics are licensed by the HFEA. In Norway, the closest equivalent is the Norwegian Directorate of Health: every clinic offering assisted reproduction must be approved by it under the Norwegian Biotechnology Act, which sets strict rules for how treatment is carried out. Klinikk Hausken is on the Directorate's list of approved clinics (see the Directorate's list of approved clinics) and follows those rules at all four of our clinics.
Select a question to read the answer.
What is the chance of success with IVF at your clinics?
Measured as clinically confirmed pregnancy per fresh attempt, it ranged from 58% for women under 30 to 21% for women aged 40 or over in 2025. Frozen transfers gave a higher chance in every age group.
How do your success rates compare with UK clinics?
The HFEA publishes UK clinics' results, mostly as births per embryo transferred. Our published figures are clinical pregnancies, so compare like with like: the same measure, the same age groups, per transfer. We're happy to go through your own situation in a free case review: an intro call, then an online consultation with Dr Hausken.
Do you treat women over 40?
Yes. We treat international patients up to and including age 43. At 40 and over, the chance of a clinical pregnancy was 21% per fresh attempt and 28% per frozen transfer in 2025, and we'll be honest with you about what that means in your case.
How many trips to Norway will I need?
Usually one main stay of about 10–14 days for a fresh IVF cycle. The free case review and the consultations before it happen by phone and online. If you have frozen embryos, a later transfer needs a much shorter visit.
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"Klinikk Hausken has modern clinics in Oslo, Stavanger, Bergen and Haugesund."
Our team of doctors and embryologists work with the latest and innovative technology
The clinic has grown since we started in 2006. Today, we help singles and couples across Norway with IVF-treatment
You get a personally tailored treatment plan. It is an important reason for our success rate.
