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Free Testosterone Blood Test
Free Testosterone Test
Free Testosterone Health Test

About Description

  • determines how much testosterone is available
  • For males who suspect they have low testosterone

Testosterone Blood Test

A doctor's comments are included in this test. If you do not require a doctor's comments then you can opt out. In selecting this option, you agree that you have a qualified clinician who can interpret your results.

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A finger-prick blood test that determines how much testosterone is available to bind with the body's tissues. For males who suspect they have low testosterone.

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Testosterone Test Kit for men

Order Testosterone Test Kit

Use our testosterone testing kit online to check your testosterone levels.

Simply send your sample, using the free-postage envelope enclosed with each kit, to our partnered lab using state-of-the-art equipment.

Important: As soon as you collect your sample, you should post it to our lab. Leaving your sample can cause the blood to haemolyseand affect the results.

Our testosterone testing kit allows you to test your testosterone levels from the comfort of your own home. You simply produce a sample and send it off in a free-postage envelope to our partnered lab, who can deliver fast results via email.

Testosterone is a hormone (androgen) which is found in both sexes - male and female. It is produced in the pituitary gland within the brain, from which is travels through the blood to serve its various roles. Its primary role is to regulate male characteristics such as the development of male genitalia during puberty, the production of sperm, sex drive (libido), distribution of fat, regulation of muscle and bone mass, and stimulation of the hair follicles.

Later in a man's life, his testosterone levels will naturally decrease. This is commonly referred to as the male menopause (andropause) in the media.

When testosterone levels in males are low, a man can experience a range of symptoms, including:

 What happens when a man’s testosterone is low?

Low levels of testosterone in the blood can cause a number of physical and psychological symptoms. Effects include:

  • Decreased libido
  • A reduction (or absence) in morning/night-time erections
  • Erectile dysfunction
  • Decreased body hair
  • Gynaecomastia
  • Reduction in muscle mass and strength
  • Fatigue
  • Sleep disturbances
  • Mood changes (e.g depression, irritability, anxiety)
  • Poor concentration and memory

To test your testosterone levels, you may need to conduct a home test. It is as simple as a finger-prick test. You can either have a kit sent to you or we can deliver it to your home. Our doctors will contact your about the results and next steps after receiving them.

Total testosterone: This is the total amount of testosterone found in the blood. Some of it is attached to proteins, such as Sex-Hormone Binding Globulin (SHBG) or Albumin, which transport it around your body. Low testosterone can be defined as <15nmol/L

Free testosterone: This is the testosterone which is not attached to any proteins so it’s free to be used by the body’s cells. When a cell binds to free testosterone its functionality is enabled, so the more you have of it, the better. Low free testosterone is defined as<0.225nmol/L

Sex hormone-binding globulin (SHBG): This protein is produced in the liver and regulates hormone levels by binding to sex hormones, including testosterone. When your SHBG levels are high, your body has less free testosterone available to be used by the body’s cells.

Albumin: Another protein produced in the liver which binds to testosterone, inhibiting its ability to be used by the body’s cells.

Our online pharmacy has been registered with the GPhC, General Pharmaceutical Council. All of our medicines are sourced from licensed UK wholesalers.

Have your ''Test Only'' for Testorone done here: Male Fertility Low Testosterone Blood Test


What is a normal testosterone level for my age?

A normal testosterone level for adult men is around 8.7–29 nmol/L (250–836 ng/dL). Most UK laboratories will use reference intervals similar to this. These values don’t take your symptoms, baseline levels, or age-related decline into account. But your doctor will consider this when interpreting your levels. If your testosterone levels are less than 12 nmol/L and you have symptoms, you may benefit from testosterone replacement therapy (TRT). 

A 2022 study looked at testosterone levels of 1,486 men between the ages of 20 and 44 [6]. To calculate the normal testosterone level for each age bracket, they took the middle third and labelled these as normal results (according to the American Urological Association’s definition of normal testosterone):

Age Testosterone (nmol/L) Testosterone (ng/dL)
20–24 14.2–19.3 409–558
25–30 14.3–19.9 413–575
30–34 12.4–17.3 359–498
35–40 12.2–16.5 352–478
40–44 12.1–16.4 350–473

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Every bodily function, including development, metabolism, reproduction, and sleep cycles, is controlled by hormones.

Your mood and energy levels, as well as your fertility and libido, can all be negatively impacted by even a slight hormonal imbalance.

Chemical messengers known as hormones are produced in your glands and delivered into your bloodstream. Your body receives instructions from them on how to control your appetite, growth, mood, and reproduction.

In general, they maintain the body's equilibrium and functionality. Hormone imbalances are frequently treated with hormone replacement therapy or by altering one's lifestyle. Throughout the day and for women during the menstrual cycle, hormone levels change.

A hormone called testosterone is responsible for male features. It plays a part in controlling bone mass, fat distribution, muscular mass, strength, the creation of red blood cells, and the production of sperm in men.

It also helps to regulate sex drive. Men's testicles and, to a much lesser extent, women's ovaries both produce testosterone.

Although lower than normal amounts of testosterone can occur at any age and can result in low libido, erectile dysfunction, difficulties gaining and retaining muscular mass, and lack of energy, testosterone levels in males naturally fall after the age of 30.

Even though testosterone levels in women are significantly lower than in men, it is still vital for the same reasons—it affects libido, how fat and muscle are distributed, and how red blood cells are formed.

Because reference ranges are dependent on the population being tested, they will all somewhat vary between laboratories. 95% of men will fall inside the usual range, which has been determined.

We follow the British Society for Sexual Medicine's (BSSM) recommendations for greater consistency, which state that low testosterone can be diagnosed when levels are consistently below the reference range and that levels below 12 nmol/L may also be considered low, particularly in men who also experience symptoms of low testosterone or who have low levels of free testosterone.

Only 2-3% of the testosterone that is circulating in the blood is free and available to cells; the majority is attached to proteins, particularly SHBG and albumin.

The method used in this test determines the ratio of free or unbound testosterone to total testosterone, SHBG, and albumin.

Proteins are essential for muscle growth as well as the operation of cells and tissues. Blood proteins are measured to assist in the diagnosis of various illnesses, such as liver or kidney disease.

It is common practise to analyse proteins to determine how much of a specific hormone is bound to a protein or free and thus available to your cells. Proteins also transport other chemicals, such as hormones, throughout the blood.

Dehydration is a common cause of elevated proteins, but they can also be a sign of other health issues. A significant protein deficiency may be a sign of malnutrition or malabsorption.

A protein called albumin is mostly produced in the liver. It aids in generating the osmotic pressure necessary to keep water in the blood. It is crucial for tissue growth and repair and aids in the transportation of nutrients, medicines, and other chemicals via the blood.

By evaluating albumin levels in the blood, we can determine how much hormone is available to your tissues. Albumin also transports hormones throughout the body.

The majority of the sex hormones, including testosterone, oestrogen, and dihydrotestosterone (DHT), are bound to Sex Hormone Binding Globulin (SHBG), rendering them inactive in your cells.

The amount of free or unbound hormones, which are biologically active and available for usage, can be determined by measuring the level of SHBG in your blood.

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