Experiencing low libido, irregular periods, erectile dysfunction, or unexplained fatigue? This test measures prolactin, a hormone that plays a key role in reproductive health for both men and women. Abnormal levels may indicate hormonal imbalances, thyroid disorders, or pituitary gland issues, making this test useful for those investigating fertility concerns, sexual health, or unexplained symptoms.
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What's in the test?
Hormones
Prolactin
Learn more
Prolactin is a hormone which is produced in the pituitary gland and plays a role in reproductive health. Its primary purpose is to stimulate milk production after childbirth, and in pregnant and breastfeeding women prolactin levels can soar.
How to prepare for your test
Prepare for your Prolactin Blood Test by following these instructions. Please take your sample before 10am. Do not take biotin supplements for two days before this test, discuss this with your doctor if it is prescribed.
Test limitations
Reviews
FAQs
What is prolactin?
Prolactin is a hormone produced by a small organ at the base of the brain called the anterior pituitary gland. It is best known for producing breast milk. Prolactin is usually found in low levels in both men and women. It rises during pregnancy and breastfeeding and returns to normal very quickly postpartum or after breastfeeding stops.
What does prolactin do?
As well as producing breast milk, prolactin has other wide-ranging functions, from influencing the reproductive system to regulating the immune system. Find out more about the role of prolactin.
What could a raised prolactin level mean?
Prolactin levels are naturally much higher during pregnancy and in lactating women.
there are many causes of a raised prolactin level. Most often, mild increases are seen with heavy exercise, alcohol consumption, and following intercourse. Other causes include certain medications (such as antidepressants or antipsychotics), an underactive thyroid (hypothyroidism), polycystic ovary syndrome (PCOS), chronic liver or kidney disease, or tumours affecting the pituitary gland in the brain (prolactinomas). Find out other possible causes of raised prolactin.