Results Take: Up to 2 working days
This test is ideally done between 8 and 11 am. This is because testosterone levels change during the course of the day and are highest at this time.
This testosterone test is a blood test to check the total amount of testosterone in your bloodstream.
It is important for you to mention if you have any medical problem or if you are taking any medication as this will aid interpretation of the result.
After ordering it, you will receive a confirmation message with a map and directions attached. You can then go to Patient Reception at The Doctors Laboratory to give the sample on a walk-in basis; no appointment is necessary. No fasting is required. The laboratory is open 7am – 7pm weekdays and 9am-5pm on Saturdays.
The result is usually available within 2 working days and will be e-mailed to you with an interpretation of its meaning.
Alternatively, if you would like to test yourself by skin-prick and post the sample to the laboratory, then click here. This has the advantage of convenience and can be done from anywhere in the UK.
What is Testosterone?
Testosterone is a sex hormone that is important in both men and women.
What does it do?
Testosterone plays an important part in the following functions:
- muscle bulk
- bone density
- physical strength
- body fat
- body hair
- erectile function in men
- sperm production in men
What are the symptoms of low testosterone in men?
- reduced muscle mass
- reduced strength
- muscle soreness
- increased body fat and putting on weight
- low sex drive
- difficulty with erection
- low sperm count
- loss of body and facial hair
- low mood, anxiety or irritability
- gynaecomastia (moobs!)
What are the effects of high testosterone in men?
High testosterone is rare in adult men except if they have been taking testosterone supplements. It can result in the following:
- increased muscle mass and strength
- reduced body fat
- strong bones
- increased growth of facial and body hair
- male patterned baldness
- being more aggressive
- smaller testicles
- reduced fertility
- low sex drive
- liver damage
What are the normal testosterone levels?
|Normal Laboratory Range||7.6 - 31.4 nmol/L|
|Normal for Men > Age 40||8.3 - 27.8 nmol/L|
|Normal for Men < Age 40||9.9 - 27.8 nmol/L|
≥ 12 but ≤ 28 nmol/L
|Inadequate Function Possible||
≥ 7 but ≤ 12 nmol/L
|Inadequate Function Likely||
≥ 3 but ≤ 7 nmol/L
|Inadequate Function Very Likely||
≤ 3 nmol/L
|Testosterone Excess Possible||
> 28 nmol/L
What if I have an potentially abnormal testosterone level?
If you have given a morning blood sample (between 8 and 11 am) and your result is outside the normal range, then you should follow up with your own doctor as further testing will be required.