Men's Health
Testosterone Blood Test in London
Testosterone is the primary male sex hormone and plays a crucial role in the development and maintenance of male reproductive tissues, muscle mass, bone density, and overall hormonal balance. Although it is most commonly associated with male health, testosterone is also present in women in smaller amounts and contributes to libido, mood regulation, and energy levels.
- TAT: 1 - 2 Working Days
- Sample Type: Blood
What's included
Measures total testosterone to assess reproductive, metabolic, and general hormonal health.
- Total Testosterone
About the Testosterone Test
A Testosterone blood test measures the total amount of testosterone circulating in the bloodstream. The hormone is mainly produced in the testes in men and in smaller amounts by the ovaries and adrenal glands in women. Measuring testosterone levels can help identify hormonal imbalances that may affect reproductive health, metabolism, and general wellbeing.
Testosterone levels naturally fluctuate throughout the day and tend to be highest in the morning. For this reason, blood samples are often taken earlier in the day to provide the most accurate representation of hormone levels.
What Is This Test Used For?
Abnormal testosterone levels can affect many aspects of health. Low testosterone in men, sometimes referred to as hypogonadism, may lead to symptoms such as reduced libido, fatigue, depression, decreased muscle mass, infertility, and erectile dysfunction.
High testosterone levels may occur due to certain medical conditions or anabolic steroid use. In women, elevated testosterone may be associated with conditions such as polycystic ovary syndrome (PCOS), which can lead to symptoms including acne, irregular menstrual cycles, and excess hair growth.
Measuring testosterone levels can also assist clinicians in evaluating delayed or early puberty in adolescents and investigating hormonal causes of infertility.
Who Should Consider This Test?
This test may be recommended for individuals experiencing symptoms of hormonal imbalance. Men with reduced libido, fatigue, erectile difficulties, or infertility may be advised to undergo testosterone testing. Women experiencing irregular periods, excess hair growth, or symptoms suggestive of PCOS may also benefit from evaluation.
Athletes or individuals concerned about anabolic steroid exposure may also require testosterone testing. In addition, the test may be used to monitor testosterone replacement therapy in patients receiving treatment for low hormone levels.
What Do the Results Mean?
Testosterone levels vary depending on age, sex, and time of day. Results are interpreted in the context of symptoms and may be evaluated alongside additional hormone tests such as SHBG, LH, or FSH. If abnormal results are identified, further endocrine evaluation may be recommended.
Do I Need to Prepare for the Test?
The test requires a simple blood sample collected by a trained healthcare professional. The procedure takes only a few minutes and is generally well tolerated. The sample is then analysed in an accredited laboratory using specialised hormone testing methods.
Why Choose Marylebone Diagnostic Centre?
Marylebone Diagnostic Centre provides comprehensive hormone testing using high‑quality laboratory analysis and experienced clinical staff. With a turnaround time of approximately 1–2 days, patients receive accurate results quickly to support informed medical decisions.
Frequently asked questions
When will I receive my results?
Should I discuss my results with a doctor?
