Cryos' clinic is part of Cryos International, the world’s largest sperm and egg bank. As specialists in donor sperm and egg treatments, we have extensive experience supporting individuals and couples in growing their families with help of a donor. Our success rates reflect our expertise and our commitment to providing high-quality, personalised fertility care.
The results below show our success rates per completed treatment cycle in our clinic, measured by positive hCG tests. You will also find detailed breakdowns by age group and treatment type further down the page.
Overview of success rates at Cryos’ clinic
| Treatment | Success rate (per completed cycle) |
| ICI | 5 % |
| IUI | 27 % |
| IVF/ICSI with own eggs | 55 % |
| IVF/ICSI with donor eggs | 65 % |
| Double donation | 69 % |
Please note that some categories are less than 50 treatment cycles.
While success rates provide a helpful overview of treatment outcomes, it is important to remember that these numbers do not predict your personal chance of pregnancy. Factors such as your age, fertility health, and egg, sperm, or embryo quality all play a significant role in your individual journey.
Success rates for ICI with donor sperm (ICI-D)
Below, you can find the success rates for intracervical insemination with donor sperm (ICI-D) in our clinic.
ICI treatment is a simple and non-invasive fertility treatment, often chosen by those who prefer to perform insemination themselves in a private and relaxed setting. The insemination takes place in private rooms at Cryos' clinic.
| Age group | Positive pregnancy test per insemination (%) |
| Under 35 | 6 % |
| 35 – 39 | 7 % |
| 40 – 42 | 0 % |
| 43+ | 0 % |
| Total | 5 % |
Please note that some categories are less than 50 treatment cycles.
These success rates provide an overview of outcomes from all completed ICI cycles at Cryos up to the beginning of December 2025.
Success rates for IUI with donor sperm (IUI-D)
Below, you can find the success rates for intrauterine insemination with donor sperm (IUI-D) at Cryos.
IUI with donor sperm is a gentle and widely used fertility treatment, performed by our experienced team at our clinic in Aarhus. Depending on your situation, we offer both natural cycle IUI and stimulated cycle IUI.
| Age group | Positive pregnancy test per insemination (%) |
| Under 35 | 37 % |
| 35 – 39 | 28 % |
| 40 – 42 | 7 % |
| 43+ | 17 % |
| Total | 27 % |
Please note that some categories are less than 50 treatment cycles.
These success rates offer an overview of outcomes from all completed IUI cycles at Cryos up to the beginning of December 2025.
Success rates for IVF with donor sperm
Below, you can find the success rates for IVF with donor sperm (IVF-D) in our clinic.
IVF with donor sperm is a commonly used fertility treatment. Many individuals and couples turn to IVF-D if they have medical conditions affecting fertility or if previous IUI treatments have not resulted in pregnancy.
The results below reflect IVF treatments using your own eggs combined with donor sperm.
| Age group | Positive pregnancy test per embryo transfer (%) |
| Under 35 | 71 % |
| 35 – 39 | 78 % |
| 40 – 42 | 33 % |
| 43+ | 33 % |
| Total | 55 % |
Please note that some categories are less than 50 treatment cycles.
These success rates are based on all completed IVF-D cycles at Cryos up to the beginning of December 2025.
Success rates for donor egg treatment
Below, you can find the success rates for donor egg treatment at Cryos' clinic.
Donor egg treatment is an option for those who are unable to conceive with their own eggs. This might be due to age, medical conditions, previous surgery, or concerns about passing on genetic conditions.
The results below show success rates for frozen embryo transfers using donor eggs and partner sperm.
| Age group | Positive pregnancy test per embryo transfer (%) |
| Under 35 | 67 % |
| 35 – 39 | Data not available |
| 40 – 42 | 100 % |
| 43+ | 50 % |
| Total | 65 % |
Please note that some categories are less than 50 treatment cycles.
These success rates offer an overview of outcomes from all completed IVF cycles using donor eggs and partner sperm at Cryos’ clinic up to the beginning of December 2025.
Success rates for double donation treatment
Below, you can find the success rates for double donation treatment at Cryos.
Double donation involves using both donor eggs and donor sperm and eggs to achieve pregnancy. This treatment can be done using IVF or ICSI methods, depending on individual circumstances.
The figures below show success rates for frozen embryo transfers with donor eggs and donor sperm.
| Age group | Positive pregnancy test per embryo transfer (%) |
| Under 35 | 100 % |
| 35 – 39 | 50 |
| 40 – 42 | 50 % |
| 43+ | 67 % |
| Total | 69 % |
Please note that some categories are less than 50 treatment cycles.
These success rates offer an overview of outcomes from all completed IVF cycles using donor eggs and donor sperm at Cryos' clinic up to the beginning of December 2025.
How to increase your chances of success with fertility treatment
Before your appointment at Cryos, there are a few things you can do to improve your fertility, which may help to increase the chances of a pregnancy occurring.
- Age: Age is one of the most defining factors in terms of fertility. If you are above the age of 35, you may want to consider a fertility assessment before treatment, as women's fertility drops significantly after the age of 35. Fertility tests are available at fertility clinics and gynaecologists.
- Diet: A popular saying is that you are what you eat. This is true, as a healthy and balanced diet containing all the vitamins and minerals your body needs can help increase your fertility. Try to limit your intake of sugar and refined carbohydrates as they cause your blood sugar levels to rise, which can affect your hormonal system and potentially harm your fertility.
- Lifestyle: To increase your chances of successful insemination, avoid smoking and alcohol, as these are known to reduce fertility. Reducing your caffeine intake is another lifestyle change to try. Limit your caffeine intake to a maximum of five cups of coffee a day.
- Stress: Research shows that stress levels can affect your fertility. To reduce stress factors in your life, we recommend activities such as yoga, long walks or meditation.
- Vitamins: The Danish Health Authority recommends that pregnant women take folic acid, iron, and vitamin D supplements. In addition, recommended supplements include calcium, either through diet or supplements.
Ready to take the next step?
Curious to learn more about your treatment options at Cryos’ clinic in Denmark?
Our experienced team is here to answer your questions and help you get started.
Request a free consultation today and take the first step on your fertility journey.
Frequently Asked Questions (FAQ) about success rates
Does age impact IUI and IVF success rates?
Yes, age is one of the most important factors affecting success rates in both IUI and IVF treatments. Typically, the chances of success decrease as age increases, especially for treatments using your own eggs. Treatments using donor eggs or double donation can offer higher success rates, even at a higher age.
What is the success rate of IVF by age?
The success rate of IVF by age depends on whether you are using donor sperm, donor eggs, or both. For IVF with donor sperm, the success rates in Cryos' clinic by age are:
- Under 35: 71 %
- 35 – 39: 78 %
- 40 – 42: 33 %
- 43+: 33 %
The average success rate across ages is 55 %.
What affects the success rates of fertility treatments?
Several factors can influence the success rates of fertility treatments, including your age, overall reproductive health, lifestyle choices, and the quality of eggs, sperm, or embryos used. At Cryos Clinic, we always tailor your treatment plan based on your unique circumstances.