Sex Hormone Binding Globulin


A test to measure levels of sex hormone binding globulin (SHBG) in your blood.

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Sex Hormone Binding Globulin

About this test

Sex hormone binding globulin, or SHBG, is a protein produced by your liver and found in both men and women. This protein attaches itself to three other sex hormones; estrogen, dihydrotestosterone (DHT), and testosterone. Of the three, testosterone is the perhaps the most important, as SHBG controls how much of it your body tissue can use. Low levels or even high levels of testosterone can result in medical problems.

This test looks for how much SHBG you have in your blood, which can subsequently lead to a gauge of estrogen, DHT and testosterone levels. The test also takes into account your sex and age, and any conditions such as liver disease, hyperthyroidism and obesity, all of which can impact on levels of SHBG.

Who is this test for?

This test is ideal for men and women wishing to find out their levels of SHBG (sex hormone binding globulin).

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


Most of the sex hormones - testosterone, oestrogen and dihydrotestosterone (DHT) - found in your blood are bound to Sex Hormone Binding Globulin (SHBG) which means that they are unavailable to your cells. Measuring the level of SHBG in your blood gives important information about your levels of "free" or unbound hormones which are biologically active and available for use.

Elevated SHBG indicates that there is less testosterone or oestrogen available for use whereas low levels can mean an excess of available hormones.

Finger-prick blood sample collection kit

We will send you your Sex Hormone Binding Globulin finger-prick blood test 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 Sex Hormone Binding Globulin 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 test results and give you follow-up advice where necessary. If you need it, a PDF copy of your Sex Hormone Binding Globulin 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 Sex Hormone Binding Globulin 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 test results. Your medical and family history gives us vital information when interpreting your results.

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