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.




Prolactin Blood Test
- Results estimated in 2 working days
- Convenient testing options
- Free delivery
Includes prolactin, a hormone that regulates menstrual cycles and affects testosterone levels in men. For a broader assessment of hormone health, consider our Female Hormone Blood Test or Male Hormone Blood Test.
How do you want to take your sample?
Please choose one option below-
Collect your own finger-prick blood sample at homeFreeWe’ll send you everything you need to collect your blood sample from your finger at home.
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Book a venous draw at a clinic Venous+£35Visit one of our national clinic partners for a nurse to take your venous blood sample from a vein in your arm. We’ll email you instructions on how to book after we’ve processed your order.
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Book a venous draw at home with a nurse Venous+£59Book a home nurse appointment for a nurse to take your venous blood sample from a vein in your arm.
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Self-arrange a professional sample collection VenousFreeMake an appointment at a phlebotomy clinic to have your venous blood sample taken. You will be responsible for arranging your appointment and any additional fees.
18+ Only. T&Cs apply.
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How it works
You have the flexibility to choose what works best for you. Enjoy the comfort of having a friendly nurse visit your home for a quick blood draw, opt for a convenient visit to one of our nationwide partner clinics, or self-arrange a draw at a location that suits you.
Take control of your health with Medichecks – order your blood test today!

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Supported by a team of specialist and qualified doctors
Dr Natasha Fernando
Medical DirectorDr Tina Ghela
Digital Clinician LeadDr Susanna Hayter
Digital Clinician
What's in the test?
Hormones
Prolactin
Learn more
How to prepare for your test
Prepare for your Prolactin Blood Test by following these instructions. Take your sample between 6am and 10am. Avoid vigorous exercise or sexual activity for 48 hours beforehand – both can raise your prolactin level. Avoid nipple stimulation or heavy meals before taking the test, as these can increase prolactin levels. 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?
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.