Testosterone is a crucial hormone in males and females, affecting sex-drive, energy, mood, fertility, muscle mass and metabolic health.
Our Testosterone Blood Test is a simple blood test you can take at home and send to our lab for analysis to check your testosterone levels.
£35.00
You can choose how you'd like to collect your blood sample. You may also want to add to your test panel depending on your age, sex and any symptoms.
Finger-prick blood collection
Use our simple kit to collect a blood sample from your finger at home.
Visit a clinic to have your blood taken
Book a venous draw at home or work with a nurse
Arrange your own venous blood draw
Dr Alasdair Scott
gut doctor, PhD and our Science Director
Dr Alasdair Scott
gut doctor, PhD and our Science Director
Testosterone is a crucial hormone for both men and women. Although women produce less testosterone than men, they still make three to four times as much testosterone as oestrogen.
Low testosterone is common and can cause reduced sex-drive, low energy, infertility, low muscle mass and poor metabolic health. High testosterone can also be a problem in women and is associated with excess hair growth, acne and voice deepening.
Testosterone is the main androgenic sex hormone in both men and women. In men, testosterone is produced in the testes in response to stimulation by luteinising hormone from the pituitary gland. In women, most testosterone is produced from the adrenal glands though some also comes from the ovaries.
In both men and women, testosterone plays a role in sex-drive, energy, fertility, muscle mass and metabolic health.
Total testosterone measures the total concentration of testosterone in the blood. However, most testosterone is actually bound to proteins in the blood (mainly albumin and sex hormone binding globulin) which inactivates it. We can account for this to calculate the amount of "free" testosterone which is actually available for your body. This is a more accurate measure of testosterone status than measuring total testosterone alone.
Testosterone levels fall naturally in both men and women from about 30 years of age. However, about 1-in-4 men over the age of 40 have low testosterone levels for their age. This can be caused by:
Symptoms of low testosterone include:
High testosterone levels aren't usually a problem in men but they can cause issues in women. The main causes of elevated testosterone in women are polycystic ovarian syndrome (PCOS) and testosterone replacement therapy. Symptoms of high testosterone levels in women include:
Testosterone levels are different in men and women.
For men:
Total Testosterone level (nmol/L) | Meaning |
<8 | Very low testosterone - likely to benefit from testosterone replacement therapy |
8 - 12 (or 8 - 14 if pre-diabetic / diabetic) | Borderline low testosterone - may benefit from testosterone replacement therapy |
>12 (or >14 if pre-diabetic / diabetic) | Normal |
For women:
Total Testosterone level (nmol/L) | Meaning |
<0.3 | Low |
0.3 - 1.8 | Normal |
>1.8 | High |
Testosterone is the main androgenic sex hormone in men and women.
In order to make your Testosterone Blood Test as accurate as possible, it’s important to prepare for it by:
Testosterone levels peak in the morning so it's best to take your Testosterone Blood Test between 6am and 10am, when testosterone levels are at their highest.
Yes, our Testosterone Blood Test is ideal to monitor your testosterone levels if you are taking testosterone replacement therapy (TRT).
However, please avoid taking blood from fingers that have handled testosterone patches, tablets, gels or pessaries in the four weeks before testing, unless you were wearing gloves. Testosterone will stay in your skin and give a falsely high measurement.
Yes, both men and women can take this Testosterone Blood Test. Women actually have three to four times as much testosterone as oestrogen and it plays an important role in energy, libido, muscle mass, fertility and metabolic health. Women are most at risk of low testosterone after the menopause and testosterone replacement therapy has a role alongside traditional hormone replacement therapy (GRT).
Before the menopause women may also have problems because of high testosterone levels associated with conditions such as polycystic ovarian syndome (PCOS) which can cause irregular periods, infertility, acne and unwanted hair growth.
When we report testosterone results, we put testosterone levels into the appropriate reference ranges for men and women.