Hormone blood tests are an essential tool in understanding male and female fertility. By analysing key reproductive hormones, our fertility specialists can identify hormonal imbalances, assess ovarian function and guide recommendations for further investigations or treatment.
Female infertility is often related to hormonal disorders. Hormones tested in a Female Hormone Test include:
A Male Hormone Check can include tests for the following hormones:
Determining the level of hormones sometimes allows for the detection of the cause of fertility problems and what treatment is required.
The Reproductive Hormone Profile is performed using blood samples and provides important information about ovarian reserve, ovulation, hormone balance and reproductive health.
Whilst some tests, such as AMH, can be performed at any stage of the menstrual cycle, others are most informative when measured at specific times. Depending on the investigations required, you may therefore be asked to attend on particular cycle days.
Our team will advise you on the timing of any blood tests and ensure the results are interpreted in the context of your individual circumstances.
Why would I need a hormone blood test?
Hormonal imbalances are associated with fertility difficulties in both men and women. A Reproductive Hormone Profile can help identify conditions such as Polyendocrine Metabolic Ovarian Syndrome, thyroid disorders, poor ovarian reserve or problems with sperm production. Your results will guide your specialist in recommending the most appropriate next steps, whether that is further investigation or a course of treatment.
What is the difference between FSH and LH, and why are both tested?
FSH (Follicle Stimulating Hormone) and LH (Luteinising Hormone) are both produced by the pituitary gland and work together to regulate the reproductive system. In women, FSH stimulates the development of follicles in the ovaries, while LH triggers the release of an egg at ovulation. In men, FSH supports sperm production and LH stimulates testosterone production. Testing both hormones together gives your specialist a more complete picture of how your reproductive system is functioning and can help pinpoint where any imbalance may be occurring.
Can thyroid function really affect my fertility?
Yes. The thyroid gland produces hormones that regulate your metabolism and influence many body systems, including reproduction. An underactive or overactive thyroid can disrupt the menstrual cycle, affect ovulation and in some cases make it harder to sustain a pregnancy. Thyroid gland abnormalities have also been associated with miscarriage. Because thyroid problems are relatively common and do not always cause obvious symptoms, thyroid function is routinely included in a Reproductive Hormone Profile to rule it out as a contributing factor.
Are hormone tests used to investigate male fertility as well?
Yes. Hormone testing is an important part of assessing male fertility. FSH (Follicle Stimulating Hormone) plays a critical role in sperm production, LH (Luteinising Hormone) stimulates the testes to produce testosterone, and testosterone itself is essential for the development of male reproductive tissues. Abnormal levels of any of these hormones can indicate an underlying cause for reduced sperm production or poor sperm quality and will help guide further investigation or treatment.
What happens after I receive my hormone test results?
Your results will be reviewed by our fertility specialist, who will explain what they mean for your individual situation. Where hormone levels fall outside the normal range, we will discuss the likely cause and outline the options available to you. In some cases, results from a Reproductive Hormone Profile are used alongside other investigations, such as an ultrasound scan or semen assessment, to build a complete picture of your fertility.