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Applicant Testing


A lot of people want to make a difference by donating sperm through us. We have high requirements for sperm quality and not everyone is able to deliver that quality.


The Screening Programme

Our screening method is our raison d'être. It has been at the centre of our operations since we opened in 2004 and we continue to change and update it on a continuous basis. Our screening programme adheres to all national guidelines and EU requirements for screening.

The donor approval process

The first time a potential sperm donor visits us, he provides a sperm sample. We run tests to determine sperm quality and the ability of the sperm cells to survive freezing and thawing.

Our donor coordinators look into diseases that have affected the sperm donor's family going back three generations. The purpose of this examination is to ensure that there's no history of serious hereditary diseases. This background forms the basis for approval of the sperm donor by our Medical Team, who are clinical geneticists.

The sperm donor receives counselling about what it means to be a donor with us. This includes ID release vs. No ID release donor status.

Another sperm sample is examined. The sperm quality and the ability of the cells to survive freezing and thawing are tested once again.

Our doctors carry out a thorough health check to ensure that the donor is in good health, does not present any abnormalities, and is not suffering from any hereditary diseases.

Blood and urine samples are collected and tested for infectious diseases and genetically recessive diseases. In addition, a chromosome analysis is carried out. The results are evaluated and approved by our geneticist.

The sperm donor does a personality test, the result of which is then included on his profile.

The sperm donor receives further counselling, records an audio interview, and writes a handwritten note.

The sperm donor is officially approved by our Medical Team.

All sperm donors are tested regularly while donating to us.

In spite of our thorough screening method, it is not possible to fully eliminate the risk of transferring a genetic/hereditary disease. The marginal risk can be reduced further if the woman undergoes a genetic test as well. Read more about GeneXmatch.


What are potential donors screened for?

At European Sperm Bank, we screen our donors for the most common serious hereditary illnesses and sexually transmitted infections. We also screen for a selection of other infections on a continuous basis.

Our donors are chosen based on a range of parameters for which they are tested during the screening process:

  • The quality and number of sperm cells
  • In order to minimise the risk of the donor being a carrier of e.g. hereditary breast cancer or other dominant hereditary diseases, we carry out a Genetic Risk Assessment based on medical history going back at least three generations.
  • Our doctor carries out a thorough physical examination to reduce the risk of the donor transferring hereditary conditions.
  • Screening for sexually transmitted infections
    Genetic tests including a chromosome analysis and screening for contagious diseases.
  • Personality evaluation

If an applicant fails to receive approval in one of the categories listed, the applicant cannot join our sperm donation programme.


What happens once the sperm donor has been approved?

Once an applicant has been approved as a sperm donor, we continue to test them for contagious diseases. This is done every quarter using a serological test and NAT/NAAT screening.

If we encounter infection of any kind, the sperm donor is quarantined until the disease has been treated. If the sperm donor is infected with hepatitis B, hepatitis C, syphilis, HIV I/II, HTLV I/II, Ebola they will no longer be able to donate.

We determine whether there is new information to respond to with every donation. If, for example, the sperm donor has reported travelling, we will test for any relevant travel-related infections.

When are the donations released?
We adhere to national and international legislation and therefore do not release donations until we have established that the donor did not have any contagious diseases on the donation day in question.


Autosomal recessive diseases

Which diseases are grounds for disqualification?

We do NOT approve applicants with unusual chromosome analyses (karyotypes) and/or who are established as carriers of one or more of the following diseases.

  • Cystic fibrosis (CF), mucoviscidosis. The number of disease-causing mutations in cystic fibrosis examined for each donor ranges from 29 mutations to all known mutations depending on when the donor was approved for the programme.
  • Spinal muscular atrophy (SMA) was added to the list for all active donors from January 2015.
  • Nonsyndromic hearing loss and deafness (DFBN1) was added to the list for all new donors from June 2016.
  • Alpha and beta-thalassemia and sickle cell anaemia.
  • Tay-Sachs was added to the list for all new donors from July 2019.


In addition, applicants of Jewish or French-Canadian background are tested for the following:

  • Bloom syndrome
  • Canavan disease
  • Familial dysautonomia
  • Fanconi anaemia
  • Gaucher's disease
  • Mucolipidosis, type IV
  • Niemann-Pick disease
  • Tay-Sachs disease

The CMV status of our donors

CMV is a common infection that most people get at some point in their lives. We regularly test all our donors to determine their CMV status. 

What is CMV?

CMV (Cytomegalovirus) is a herpes virus that is transmitted through saliva or body fluids. It is a common infection that most people get at some point in their lives.

The majority of CMV infections are harmless, and most people do not experience any symptoms. Some people may develop minor symptoms resembling a cold or the flu. In rare cases, CMV can cause health issues for unborn babies.

Once a person has been infected with CMV, the virus remains dormant in the body, but it is not contagious. The virus can be reactivated if the person's immune system is impaired.

The risk of donor sperm transmitting CMV to women or unborn children is extremely low. Even so, we discard donations made by donors with an active CMV infection as a precautionary measure.

Distinguishing between an active and a dormant CMV infection

We regularly test all our donors to determine their CMV status. We do so by screening their blood for the two types of CMV antibodies: IgM and IgG.

When someone becomes infected with CMV, the human body fights the virus by producing IgM and IgG (short for "Immune globulin M" and "Immune globulin G").

What are IgM antibodies? This type of antibodies is present in the blood of someone who has an active (new or re-activated) CMV infection that could infect other people.

If a donor tests positive for IgM antibodies, we discard the donations made during his period of being actively infected with CMV. We are able to do this because we screen donors regularly and don't make donations available for sale until test results come back negative for a range of infectious diseases, among them CMV.

What are IgG antibodies? IgG antibodies are present if a person had a CMV infection at some point in his life. The virus is not active - and thus, not contagious - unless his blood also contains IgM antibodies.

Finding a donor's CMV status

You can see a donor's IgG status in the Background section on his online profile.

If the donor is listed as negative ("Neg") it means that the donor has never had a CMV infection. His IgG status is negative. If listed as positive ("Pos"), the donor has been infected with CMV in the past. His IgG status is positive, but his IgM will always be negative, meaning that the infection is dormant, and the sperm is not contagious.

Here are the diseases we screen for

Blood sample examination

  • HIV I/II
  • Hepatitis B
  • Hepatitis C
  • Syphilis
  • CMV

Urine sample examination

  • Chlamydia
  • Gonorrhea

Depending on the travel history of the sperm donor, we might test for

  • Zika
  • West Nile Fever

Our chosen examination types

ABO - Rh blood typing

The examination reveals the donor's cell count for red blood cells, white blood cells, platelets, and haemoglobin.


The examination reveals the donor's liver function, kidney function, cholesterol, iron level, and blood sugar.

To minimise the risk of the donor being a carrier of e.g. hereditary breast cancer or other dominant hereditary diseases, we go through their medical history going back at least three generations.

Chromosome analyses and screening for the most common serious hereditary diseases with autosomal recessive inheritance.

Thorough physical examination by our doctor in order to minimise the risk of the donor transferring a hereditary condition.

Screening for sexually transmitted infections. We screen for other infections through blood or urine samples on a regular basis.


Rule out the risk of 400+ genetic conditions

GeneXmatch screens your genes and offers an added sense of security that your future child will be healthy.