Sperm quality, the number, motility and shape of sperm cells, is linked to your hormones, your lifestyle and your general health. The sperm cells themselves are assessed with semen analysis; the hormonal signalling shows in your blood, via FSH, LH and testosterone.
Good to know: sperm quality isn't fixed. Many factors can be influenced, and sperm cells renew over the course of months.
Which factors affect sperm quality?
Lifestyle plays a big role: smoking, heavy alcohol, heat, overweight and certain medicines can lower quality. The hormonal balance also matters, because FSH, LH and testosterone together drive production.
What does a blood test say about the hormonal side?
An abnormal pattern in FSH, LH or testosterone can point to a problem in the signalling or in the testicles themselves. A high prolactin can disturb the balance. Discuss the result with your doctor, together with any semen analysis.
See also trying to conceive without success and the guide male fertility.
What can you do with it?
Because sperm cells renew over the course of months, lifestyle changes can have an effect over time. What's useful in your case is something to discuss with your GP or a specialist.
Getting started
The Men's Hormones panel maps the hormonal side; the Testosterone Panel focuses on your testosterone.
References
- Wu FCW, et al. Identification of late-onset hypogonadism in middle-aged and elderly men. N Engl J Med. 2010;363(2):123-135. doi:10.1056/NEJMoa0911101.
- NHG-Standaard Subfertility (biology). Dutch College of General Practitioners.
- NVOG (Dutch Society of Obstetrics and Gynaecology). Male factor in subfertility.
Disclaimer
Caliberhealth works with BIG-registered doctors who assess your blood results. This article gives general information and is not a substitute for medical advice from a GP or specialist. A blood test is a tool, not a diagnosis in itself. For serious symptoms, contact your GP, or in an emergency call 112.
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