Advanced sperm DNA testing, to give you more information about your sperm.

DNA damage to sperm is a potential cause of infertility. SpermComet is an additional test we can perform together with your semen analysis, which measures the amount of DNA damage in your sperm.

SpermComet testing may be advised by your Manchester Fertility consultant if you have:

  • Low IVF fertilisation rates
  • Poorly developed embryos
  • Pregnancy loss

Male infertility: How SpermComet helps

Sperm DNA levels

It is normal to have some level of sperm DNA damage, but excessive damage is where problems occur. SpermComet measures the amount of DNA damage in each individual sperm, for the most accurate result.

Beyond semen analysis

SpermComet reveals DNA problems which a standard semen analysis cannot identify. Sperm may be reported as normal even though there is a high level of sperm DNA damage. This damage has been associated with problems conceiving and failed fertility treatment.

Avoid unsuccessful IVF

If SpermComet shows high levels of DNA damage, you may be advised to opt for ICSI treatment instead of starting with IVF, reducing your chance of a failed cycle and improving chances of pregnancy. We will also advise lifestyle changes you can make to reduce DNA damage levels.

Learning Centre

Learn more about male infertility and male fertility health in our Learning Centre, where you will find our patient Guide for Men, fertility blog, FAQs and free Ask the Expert tool.

Learning Centre
Learning Centre


I already have a child but I am having problems getting pregnant again. Is there something wrong with me?

Secondary infertility – the inability to have a second or third child despite have a successful pregnancy before – is not uncommon. But you may be worrying over nothing. Remember, infertility isn’t defined until you have been having regular, unprotected intercourse for up to two years without falling pregnant, so it could just be that this time it’s taking longer than before to conceive. Your age could also be a factor, remember that fertility starts to decline from age 30 onwards and even more so from age 35. But if you think you need fertility help, don’t hesitate seeing your GP or contact us,

"We are eternally grateful for the support and assistance we received during our treatment."

Emma and Darren, Mar 2019