What is the Testosterone Check?

The Testosterone Check is a blood test that measures the level of testosterone circulating in the body. Testosterone is a key sex hormone involved in muscle mass, bone density, energy levels, libido, mood, and reproductive health.

In men, testosterone is primarily produced by the testes and plays a central role in male sexual development and overall vitality. In women, smaller amounts are produced by the ovaries and adrenal glands and are important for energy, mood, and sexual wellbeing.

This test usually measures total testosterone and may be combined with other hormones for a more complete hormonal assessment.

Why do I need a Testosterone Check?

Imbalanced testosterone levels can affect physical health, mental wellbeing, and sexual function. Symptoms may be subtle and often overlap with stress, ageing, or lifestyle factors.

You may benefit from this test if you experience:

• Low energy or persistent fatigue
• Reduced libido or sexual dysfunction
• Erectile dysfunction (men)
• Loss of muscle mass or strength
• Increased body fat
• Mood changes or low motivation
• Fertility concerns
• Irregular periods or excess hair growth (women)

Testing helps determine whether symptoms are hormonally driven and supports further assessment when needed.

Benefits of the test

1. Assesses hormonal balance
   Provides insight into testosterone status in men and women.
2. Investigates low energy and fatigue
   Helps identify hormonal causes of reduced vitality.
3. Supports sexual health assessment
   Useful for libido and performance concerns.
4. Relevant for fertility evaluation
   Testosterone plays a role in reproductive function.
5. Monitors age-related hormone changes
   Helps assess hormonal decline over time.
6. Useful for fitness and muscle health
   Testosterone influences strength and body composition.
7. Simple blood-based testing
   Requires only a blood sample.
8. Guides further hormonal testing
   Results may indicate need for additional hormone checks.

Step-by-step: How we offer testing

Clinic-based testing (UK-wide)

• Choose your nearest UK clinic
• Attend your appointment
• A clinician draws a blood sample
• Sample is sent to the laboratory
• Results are issued once analysis is complete

Home or hotel visit (+£60, UK-wide)

• Book a mobile phlebotomist
• Blood sample taken at your home or hotel
• No need to attend a clinic
• Sample securely transported to the laboratory

Your results explained

Low testosterone

• Levels below the normal reference range
• UK standard (adult men, morning sample): <8–12 nmol/L
• May be associated with fatigue, low libido, and muscle loss

Normal testosterone

• Levels within the expected range
• UK standard (adult men): ~8–30 nmol/L
• Suggests adequate testosterone production

High testosterone

• Levels above the normal range
• UK standard (adult men): >30 nmol/L
• May be linked to supplementation, medication, or hormonal conditions

Reference ranges differ for women and by age; results should be interpreted in clinical context.