Prolactin Blood Test


A simple blood test that establishes if your levels of prolactin are higher or lower than normal.

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Prolactin Blood Test

About this test

Prolactin (PRL), or lactotrope as it is sometimes known, is a protein. It is produced by a small organ at the base of the brain called the anterior pituitary gland. Although found in very low levels in men, prolactin is best known for producing breast milk in females.

During pregnancy, and for the duration of breastfeeding, prolactin levels will remain high. Another cause of increased prolactin levels is a prolactinoma, a usually benign tumour of the pituitary gland that makes the prolactin. If this becomes enlarged, then headaches and visual impairment can occur. In extreme cases, prolactinoma can also result in infertility and irregular periods, while it men in can cause loss of sex drive.

This test measures levels of prolactin - and determines if the pituitary gland is working well.

Who is this test for?

This test is for people looking to find out their prolactin levels.

How it works

Collect Sample

We send you an easy-to-use kit to collect your blood sample.

Post Sample

Post your sample to our lab in the prepaid envelope provided.

View Results

View results securely in your own personal dashboard.

Important Information

Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.

Tests Included


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. 

Raised levels in a woman who isn't pregnant or breastfeeding can signal fertility problems as well as irregular periods.

Raised levels in men can cause reduced sex drive, lack of energy, erectile disfunction and fertility problems. 

Finger-prick blood sample collection kit

We will send you your Prolactin Blood Test finger-prick blood sample collection kit which contains everything you need to take your blood sample in the comfort of your own home. If you are unsure about completing a finger-prick blood sample collection you will have the opportunity to select a clinic-based venous blood sample option during the checkout process.

How to collect a finger-prick blood sample

Postage & packaging

Your Prolactin Blood Test includes 1st class postage and packaging for you to send your blood sample directly to our laboratory for analysis. If you live in an area where you cannot rely on the post or you simply want to ensure that your sample arrives at the laboratory the following day, you may wish to send your blood sample guaranteed next day delivery for extra reassurance.

Private laboratory analysis

Your blood sample will be analysed at one of our chosen laboratories. You can be assured of fast, accurate results from one of our accredited independent providers of clinical diagnostic tests.

Interpretation of results

Our medical team will comment on out-of-range blood results and give you follow-up advice where necessary. If you need it, a PDF copy of your Prolactin Blood Test results can be downloaded for your doctor.

Secure online account

Once you have placed your order you can visit where you can manage your account, track your orders and view your Prolactin Blood Test results.

Health and Lifestyle tracker

Stay motivated by filling in your online health and lifestyle questionnaire and seeing how improvements in your lifestyle can influence your results. Your medical and family history gives us vital information when interpreting your results.

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