Male Fertility – Sperm DNA Fragmentation (SDF) Testing
When couples are trying to conceive, it is common for the focus to fall primarily on female investigations. However, male factor fertility contributes to around 40 to 50 percent of fertility challenges.
Understanding sperm health is an important and empowering step.
I offer Sperm DNA Fragmentation (SDF) testing in Edinburgh for men who would like a deeper understanding of their fertility, particularly if:
You have been trying to conceive for some time
You have experienced recurrent miscarriage
You have had unexplained fertility difficulties
You are preparing for IVF or ICSI
Your standard semen analysis was normal, but pregnancy has not occurred
This test provides additional insight into sperm quality beyond a routine semen analysis.
Examen Laboratory:
The Natural Fertility Centre:
www.thenaturalfertilitycentre.uk
Fertility and Pregnancy Edinburgh:
What is Sperm DNA Fragmentation?
A standard semen analysis looks at:
• Sperm count
• Motility (movement)
• Morphology (shape)
While these are important, they do not assess the integrity of the genetic material inside the sperm.
Sperm DNA Fragmentation testing measures the level of DNA damage within the sperm cells themselves.
Even when count and motility appear normal, elevated DNA fragmentation may affect:
• Natural conception
• Embryo development
• Miscarriage risk
• IVF or ICSI outcomes
SDF testing provides another layer of information to help guide next steps.
Laboratory overview of Exact® testing:
www.examenlab.com/male-fertility-tests/exact-total-sperm-dna-fragmentation-test/
What does a high SDF result mean?
A higher fragmentation result does not mean pregnancy is impossible.
It means there may be increased DNA damage within sperm, which can be influenced by factors such as:
• Oxidative stress
• Varicocele
• Smoking
• Illness or fever
• Environmental exposures
• Lifestyle factors
Results should always be interpreted in the context of your wider fertility picture and discussed with an appropriate clinician.
This test does not diagnose a specific cause, but it can help guide whether further medical review or lifestyle optimisation may be helpful.
SDF testing provides additional insight beyond standard semen analysis and may be helpful in situations such as:
• Unexplained infertility
• Recurrent pregnancy loss
• Previous IVF or ICSI cycles that have not progressed
• Known or suspected sperm quality concerns
• Men wanting a clearer understanding of sperm health
Results are typically available within two weeks once the sample reaches the laboratory.
Further laboratory background:
www.examenlab.com/fertility-advice/what-do-we-really-know-about-male-fertility-testing-and-why-it-matters/
When is SDF Testing Helpful?
Other local support
Many men complete semen analysis or oxidative stress testing before moving on to SDF testing. Where appropriate, I collaborate with Georgie McCulloch at Fertility and Pregnancy Edinburgh, who provides male assessment including semen analysis and reactive oxidative stress testing.
Fertility and Pregnancy Edinburgh: www.fertilityandpregnancyedinburgh.com
FAQs
Do I need a referral?
1
You can self-refer for the Exact® test. The Extend® and Extensiv® tests require referral from a clinician who can interpret results within your wider fertility pathway.
How is the sample produced?
2
Samples can be produced at home and delivered to the clinic within approximately 40 minutes, keeping the sample warm and transported carefully. Alternatively, samples can be produced at the clinic. Full preparation guidance is provided in advance.
How long does the appointment take?
3
Around 45 minutes.
How long do results take?
4
Usually within two weeks once the sample reaches the laboratory.
What if fragmentation levels are high?
5
A higher level means a greater proportion of sperm contain DNA damage. This does not mean pregnancy cannot happen. Results are always interpreted within clinical context.
Can Sperm DNA Fragmentation improve?
6
Yes. Sperm are renewed continuously and DNA quality can change, particularly where modifiable factors are addressed.
How is the test carried out?
7
The test involves providing a semen sample.
You will be given clear instructions beforehand, including:
• Recommended abstinence period
• How to collect the sample
• How and when to return it
• Timing for courier shipment
Semen samples should not be collected using standard condoms or lubricants unless specifically fertility safe.
Results are usually available within approximately two weeks.
Do I need SDF testing or a standard semen analysis first?
8
If you have never had a semen analysis, it is often recommended to start there.
A standard semen analysis assesses count, movement and morphology. SDF testing adds further information about DNA integrity.
In some cases, both tests are useful.
If you are unsure which test is appropriate, you are very welcome to get in touch to discuss your situation.
What happens after I receive my results?
9
After your results are available, you may wish to:
• Discuss them with your GP
• Consult a fertility specialist or urologist
• Explore lifestyle changes to support sperm health
• Consider further investigations
Where appropriate, I can signpost you to trusted professionals for further support.
Supporting long term sperm health
10
Sperm quality reflects overall health.
Improving:
• Nutrition
• Sleep
• Stress management
• Alcohol intake
• Exercise habits
can positively influence sperm health over time.
For many men, this process is about more than fertility. It is about long term wellbeing.
Pricing
Examen offers three levels of sperm DNA fragmentation testing, depending on the depth of analysis required.
Exact® SDF Test - £565
Measures total sperm DNA fragmentation and provides an overall percentage of DNA damage. Suitable for self-referral and initial assessment.
www.examenlab.com/male-fertility-tests/exact-total-sperm-dna-fragmentation-test/
Extend® SDF Test - £665
Assesses double-strand DNA breaks, which may be relevant in cases of recurrent miscarriage or repeated IVF or ICSI failure. Requires referral from a clinician who understands your medical history.
www.examenlab.com/male-fertility-tests/extend-double-strand-sperm-dna-fragmentation-test/
Extensiv® SDF Test - £935
Comprehensive combined analysis including total DNA fragmentation and double-strand break assessment. Requires referral from a clinician overseeing your fertility care.
Booking
Appointments are arranged directly to ensure correct preparation guidance and accurate sample timing.
Enquiries: malefertility@albanystreetclinic.co.uk
If preferred, patients can include their phone number and I can arrange a suitable time to speak.
Detailed preparation instructions are provided before the appointment.
