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Testosterone Replacement Therapy Profile
149.00
This profile is designed to monitor health and hormone balance during testosterone replacement therapy (TRT). It helps assess treatment effectiveness and reduce the risk of complications.
Turnaround time
2 days
Biomarkers count
29
Same-Day Appointments
UKAS Accredited Labs
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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.
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Details about Testosterone Replacement Therapy Profile
What is the Testosterone Replacement Therapy Profile?
The Testosterone Replacement Therapy (TRT) Profile is a comprehensive blood test panel used to monitor individuals receiving testosterone therapy. It evaluates testosterone levels alongside key markers affected by TRT to ensure treatment remains safe and effective.
Testosterone therapy can influence red blood cell production, hormone balance, and organ function. This profile provides a structured overview of how the body is responding, allowing trends and potential risks to be identified early.
It is commonly used before starting TRT, during dose adjustments, and for routine long-term monitoring.
Why do I need a Testosterone Replacement Therapy Profile?
TRT can significantly improve symptoms of testosterone deficiency, but it must be monitored carefully. Hormone levels that are too low or too high may lead to unwanted side effects or health risks.
You may need this profile if you:
- Are currently on testosterone replacement therapy
- Are planning to start TRT
- Have recently changed dose or delivery method
- Experience symptoms despite ongoing therapy
- Want structured monitoring rather than single tests
- Require regular safety checks during long-term treatment
Monitoring helps maintain therapeutic benefit while reducing risks associated with overtreatment or poor response.
Benefits of the test
- Comprehensive TRT monitoring
Assesses testosterone levels alongside safety-related markers. - Ensures treatment effectiveness
Confirms testosterone levels are within target range. - Reduces risk of complications
Helps identify changes in blood markers linked to TRT. - Supports dose optimisation
Guides informed adjustment of therapy when needed. - Tracks long-term trends
Ideal for repeat testing and comparison over time. - Improves symptom correlation
Helps explain persistent or new symptoms during therapy. - Objective clinical data
Provides measurable results rather than symptom-only assessment. - Supports safe long-term use
Essential for responsible testosterone therapy management.
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 response
- Testosterone levels remain below target range despite therapy
- UK standard (adult men, typical targets): <12–15 nmol/L
- May indicate underdosing, absorption issues, or timing factors
Optimal therapeutic range
- Testosterone within intended TRT range
- UK standard (adult men): ~15–30 nmol/L
- Suggests effective treatment with balanced hormone levels
Excessive testosterone exposure
- Testosterone above recommended range
- UK standard: >30 nmol/L
- May increase risk of side effects and requires review
Other markers in the profile help assess blood thickness, hormone binding, and metabolic response and should be interpreted together.
How It Works
Simple steps to get your results
1
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
2
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
3
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
Frequently Asked Questions
It typically includes testosterone and additional markers used to monitor therapy safety and response.
Testosterone can affect multiple body systems and requires regular oversight.
TRT is most commonly used in men, but monitoring principles apply universally.
Yes, symptoms may not always correlate directly with hormone levels.
It is commonly used at baseline and during ongoing therapy monitoring.
Yes, testosterone can increase red blood cell production.
Yes, it helps assess response after adjustments.
Yes, sleep, stress, and weight can impact hormone levels.
Not always; results must be interpreted with symptoms and history.
It suggests excessive exposure and may require dose review.
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