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Testosterone Blood Test

In Stock
Free Delivery
Results within 2 working days
UKAS accredited laboratory analysis. Results reviewed by UK registered doctors.

Our Testosterone test kit measures your total testosterone levels that could be affecting muscle strength, energy, libido and mood. Test results are reviewed by our UK registered Doctors who will provide any comments on any out of range results and provide actions.
What's included
your discount will be applied at checkout


Add extra biomarkers to this test from as little as £5 to get a better understanding of your hormone levels. 

Dr Nicky Keay - Forth
“Testosterone production is controlled by two key hormones – follicular luteinising hormone (FSH) and luteinising hormone (LH). In order to give a clearer picture of your testosterone production, I would recommend adding these two control hormones to this test which will be more informative than measuring testosterone in isolation.”

Dr Nicky Keay
Chief Medical Officer & endocrinology expert

How to Test
Testosterone levels

Checking your testosterone levels with our at-home blood test is quick and easy. The test kit contains everything you need to collect a small blood sample, and return to us with the included free postage label. Once we have your blood sample, we’ll analyse the results and prepare a personalised dashboard for you. You’ll be able to see if your testosterone levels are low, high or at optimum levels.

Dr Nicky Keay
the Experts Opinion

Testosterone is a sex steroid hormone found in both men and women, although higher levels in men. Levels in both men and women decline from middle age. Informing yourself of your testosterone level can help you to understand if your value is as expected, low or high for your age and biological sex. Your result can then be considered in the context of any symptoms you are experiencing, and tailored advice given to address any issues identified. This might include resistance type exercise to support testosterone levels, and/or reviewing dietary intake matches demands from exercise training and/or if sufficient recovery being taken.

Dr Nicola Keay
Forth Chief Medical Officer

Why measure
Testosterone levels?

Our home testosterone test measures total testosterone which is a combination of free and bound testosterone. Testosterone is an essential male hormone integral to multiple functions in the body including energy, bone health, mood, libido and muscle growth. Our convenient testosterone test kit will identify if your levels require improvement. 

When to take This test

Testosterone levels are at their peak first thing in the morning, so it's best to collect a sample for the testosterone test between 8am - 10am.

In Men

Testosterone in men is an important sex hormone which regulates libido (sex drive), body mass, strength as well as being involved in the production of red blood cells and sperm.

As men get older, the amount of testosterone they produce falls. Some of the testosterone in men is converted to another hormone called oestrogen (specifically oestradiol). Oestradiol helps with libido and erectile function and so, as testosterone levels drop, so too does the level of oestradiol.

It’s not just age though that can reduce testosterone production. Overtraining and/or under fuelling in exercise can also result in low testosterone levels.

Several symptoms can arise from low testosterone in men including low mood, fatigue, difficulty sleeping, low libido, difficulty gaining muscle mass and predisposition to gain fat. Low testosterone is also associated with an increased risk of injuries such as stress fractures which may have significant consequences in older men but can also impact upon your usual daily routine including exercise and training.

A high testosterone blood test result can affect fertility by causing a low sperm count. A high intake of steroids to aid sports performance can also stop the body producing testosterone. 

Testosterone Level
32% of men
who tested with Forth had levels below the normal or in the lower part of the normal range.
Male and Female Average

Testosterone and Exercise

Some exercises initially increase testosterone levels but this is usually only for a brief period. However, there is a fine balance needed for healthy testosterone levels. For example, intense training without adequate rest and recovery can cause a significant reduction in testosterone levels and overtraining syndrome.

You may be at risk of overtraining syndrome if your are experiencing symptoms such as fatigue, low motivation, depression and a slow heart rate.

Testosterone has vital roles in muscle mass and strength as well as being vital for maintaining bone density. So, low testosterone can increase the risk of fractures which will negatively impact your training.

Because of the hormone’s role in muscle mass, if testosterone levels are too low, your body may start to break your muscles down to extract energy. Ultimately, this will affect your overall performance.

Frequently asked questions

 Here are some of the most frequently asked questions. If you need anything else try our help section.

  • What is testosterone?

    Testosterone is a male sex hormone also known as an androgen. It has a vital role in the sexual development of men, particularly sperm production as well as regulating bone and muscle mass.

    It’s also an important hormone in women and is responsible for regulating their sex drive too as well as regulating bone and breast health amongst other things.

    Testosterone levels are controlled by the brain and pituitary gland and once it has been made, it is transported by the blood to the various parts of the body which require it to function.

  • How to check testosterone levels?

    Our testosterone blood test measures your total testosterone level and it’s really simple to do.

    Once you have purchased your test online it will arrive in a box that easily fits through your letterbox. The kit contains everything you need to carry out your finger-prick blood test at home, complete with detailed instructions. Once you have collected the sample for your testosterone test, simply put it in the pre-paid envelope and post back to us. The tests are carried out by our accredited labs and reviewed by a GP or nurse. Your results will be available on your Forth dashboard within 2 working days of receipt.

  • What are the signs of high testosterone?

    Some men are genetically predisposed to increased testosterone. An increased testosterone count in men can be caused by adrenal or testicular tumours. Even harmless tumours, known as benign, can increase testosterone levels. Signs of high testosterone in men include:

    • Aggressive or irritable behaviour
    • Acne
    • Oily skin
    • Sleep apnoea
    • low sperm count

    Taking too much testosterone replacement therapy can also result in a high level and may be accompanied by some of the unpleasant side effects. Increased testosterone also raises cholesterol levels which can put  men at greater risk of  heart attacks and stroke.

  • What is testosterone free and total testosterone?

    Two types of testosterone can be tested, free and total.

    Most testosterone molecules bind with sex hormone-binding globulin (SHBG) or albumin. This is known as bound testosterone.

    Free testosterone, however, isn’t attached to any other molecules in the blood and so is readily available for use by the body. Total testosterone measures the combined amount of free and bound testosterone. So, your total testosterone level will always be greater than your free level.

  • What is the normal testosterone level for men?

    The normal testosterone level for men is between 8.65-29 nmol/L. However, a healthy level of testosterone will depend on your age and other factors. A testosterone test will show what your optimum level should be.

  • Does testosterone increase when you work out?

    Exercise initially increases testosterone levels when you workout but the effects may not be long-term.

    There are specific types of exercise which can help to support the production of testosterone, particularly strength and resistance-based exercises.

  • Do I need to take a testosterone supplement if my level is low?

    TRT should only on the advice and guidance of a medical doctor. For those competing in sport, testosterone is on WADA banned list.

  • How can I get my testosterone level up?

    Taking part in strength and resistant type exercise can help with the production of testosterone. Other factors which can support testosterone levels are getting good quality sleep, eating a healthy balanced diet, losing weight if you’re overweight and reducing stress.

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