What do doctors and the patient association say?

SPZ Lab works together with many fertility clinics, and doctors in Denmark, UK and abroad.

Here you can read what doctors, the Danish patients’ organisation and The National Association for the Involuntarily Childless (Landsforeningen for Ufrivilligt Barnløse - LFUB) say about the SDI-test:

Ireland and United Kingdom

Dr. Declan Egan

Dr. Declan Egan, Galway Fertility, Ireland

At Galway Fertility we recommend to all couples that the sperm DNA integrity is tested prior to any fertility treatment. The result of the SDI-test is then used by the couple to choose the most optimal fertility treatment. In many cases the couple can avoid treatments which are unlikely to succeed and thus saves time as well as money.

Dr. Declan Keane

Dr. Declan Keane, ReproMed, Dublin, Ireland

SPZ Lab has performed the test for sperm DNA integrity for ReproMed for the last 3 years. The service provided by this laboratory is excellent with exceptionally good patient support, backed up by the scientific knowledge of the SPZ Lab director Dr. Preben Christensen. We are presently entirely happy with the level of service provision from SPZ Lab. The SDI-test is a valuable help for us to guide the couples to the best possible fertility treatment.

David Walker

Dr. David Walker, Bath Fertility Center, England

The SDI-test is important for both doctor and patient. In many cases fertility can be improved by making changes to the man’s lifestyle or looking at other causes. This can lead to the couple becoming pregnant without the need for more invasive treatment.


Dorthe Knudsen

Dorthe Knudsen, Chairperson LFUB (National Association for the Involuntarily Childless), Denmark

LFUB regards the SDI-test as an opportunity to clarify some of the causes of involuntary childlessness, and to optimise the chances of pregnancy. We hope that further research in the field will lead to the SDI-test being used in the future as part of the preliminary examinations of the man’s fertility.

Martin Blomberg Jensen

Martin Blomberg Jensen, Doctor, Dr. Med., Lecturer, Harvard University, Boston, USA

Since 2011, I have used the SDI-test in connection with two scientific studies. The first was a so-called RCT (randomised and double-blind), and provided an extremely reliable test of SPZ Lab’s precision. SPZ Lab had no possibility of knowing when a test was from the same man.

The study clearly showed that SPZ perform their tests with a very high level of precision. This is of great value to me as a researcher and clinician. SPZ Lab's thorough quality control is of great importance.

Examination of the sperm cell DNA quality is a parameter whose use has been the subject of great discussion in recent years. This is why it is important to use high quality methods. SPZ Lab has proved that they live up to this in our trials.
Martin Blomberg Jensen

Peter Lundström

Fertility specialist Peter Lundström, Fertility Clinic IVF, 2750 Ballerup, Denmark

All childless couples should ensure that the man takes an SDI-test already in the early phases of treatment. I use the test to recommend the most appropriate treatment, based on our current knowledge, from the start. For the couple it can mean that, in many cases, both time and money are saved and at best the disappointment of unsuccessful treatments avoided.

Dr. Angela Carstensen

Dr. Angela Carstensen, Kinderwunsch Kiel, Kiel, Germany

A high proportion of sperm with fragile DNA decreases the chance of achieving pregnancy naturally. When a couple comes to us at Kinderwunsch Kiel, they have often tried to conceive for a long time and are quite frustrated that the pregnancy has not been achieved already.

In many cases, the test for sperm DNA integrity (SDI test) can help us to pinpoint the problem and select the most successful therapy for the couple. In some cases it is possible to improve the quality of the sperm DNA, and thus improve male fertility before any fertility treatment is performed.

We have collaborated successfully with SPZ Lab since 2010 and are pleased to offer the SDI test as the only fertility centre in Schleswig-Holstein.

Dr. Robert Fischer

Dr. Robert Fischer, Fertility Center Hamburg, Germany

At the Fertility Center Hamburg we have, since 2009, offered our patients an examination of their sperm DNA integrity as part of their initial assessment, prior to starting a course of treatment. It is our opinion that the SDI-test can help couples find the best treatment right from the start. For many couples the test means that they can avoid the disappointment of unsuccessful treatments.

Since 2009, the Fertility Center Hamburg has been involved in the collection of data that confirms our opinion. The results were published at the European fertility congress (ESHRE 2013) in cooperation with Sims IVF (Dublin, Ireland) and SPZ Lab. It is our hope that as many couples as possible will choose to have an SDI-test taken before they begin any fertility treatment.

Laura Dracea

Dr. Laura Dracea, Gynera Fertility Center, Bucharest, Romania

The SDI-test is very important for Gynera Fertility Center. It gives us the opportunity to show improvements in men where health-related issues play a role in reduced fertility. SPZ Lab’s detailed answers are of immense value to us.

Get pregnant the natural way

If suboptimal or poor DNA integrity is the only reason for your childlessness, you can maybe get pregnant the natural way.

Increase your chances of successful fertility treatment

Improved DNA integrity means that your chances of pregnancy will be increased no matter the type of fertility treatment.