IN COLLABORATION WITH

Mark Lewis

“Like a lot of men, I didn’t notice the gradual drop in energy, motivation, and resilience until it was already affecting my day-to-day life. Testosterone isn’t something most men talk about—but it probably should be. I’m working with Voy to help men understand what’s actually going on under the surface, using proper medical testing rather than guesswork.”

£55£30.25
First order discount
Order a blood test
If you already have a low testosterone result, the Enhanced Testosterone Blood Test will assess your suitability for TRT.

MANUAL is now Voy

We’ve changed our name from MANUAL to Voy, but our mission and commitment to you remain exactly the same. Learn more

Mark Lewis partners with Voy

“I’ve chosen to work with Voy because their approach to testosterone is careful, medical, and grounded in evidence. Hormone health is often misunderstood, poorly explained, or wrapped up in unnecessary stigma. Too many men either ignore symptoms entirely or are sold oversimplified answers.

Voy focus on proper testing, clinical oversight, and informed decision-making — which is exactly how this subject should be handled.”

Mark Lewis

The health issue
men don’t talk about

SCIENCE

What is TRT?

Testosterone Replacement Therapy (TRT) is used to treat men with low testosterone levels, which can cause a range of life-debilitating symptoms. It works by supplementing the hormone, helping restore you to optimal body functions and overall well-being.
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Voy are experts in TRT. Their best-in-class TRT clinicians and access to top-of-the-range medication has helped over 10,000 men reach their full potential.
DIAGNOSIS

+239% increase in T. levels with TRT

Patients see their total testosterone levels increase by +239% in average over 2 months.
Citations
  • 1 Based on VOY clinical care data from over 2000 patients over the last 18 months
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The Voy Way

How to get started

Home testing
Easy at-home testing
No doctor appointments, no waiting rooms. A simple finger prick blood test is all it takes to check your testosterone levels.
Results
Results online
Get a clear picture of your testosterone levels with online results, available just days after taking your test.
Consultation
Expert consultation
A specialist TRT doctor will walk you through your results and treatment options (if applicable) so you can take action.
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At-home testosterone blood test

A quick at-home finger-prick blood test provides all we need to accurately determine if you have a testosterone deficiency.
Parcel
Convenient at-home testing
Medical
UKAS-certified laboratories
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Track your results online
4 Biomarkers analysed
Free Testosterone
Testosterone
Albumin
Sex-Hormone Binding Globulin (SHBG)
£55£30.25
discount applied
Order test
If you already have a low testosterone result, the Enhanced Testosterone Blood Test will assess your suitability for TRT.
Blood test
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A treatment plan tailored for you

As part of our TRT service, you’ll receive a comprehensive diagnosis and a bespoke treatment plan that may include medication, lifestyle advice or supplements.

Learn about TRT treatments
Injectable
Effectiveness
High
Format
Injections two or three times weekly for most patients
Results from
1-3 weeks
Oral
Effectiveness
Moderate
Format
One tablet alternate days
Results from
3-8 weeks
Treatment
Topical
Effectiveness
Individual
Format
Apply to the shoulders or arms once a day
Results from
1-6 weeks
Doctors
Led by TRT experts
“We offer the most effective protocols in formats to suit your preference”
The benefits

It’s about overall well-being, not just big muscles

Sleep quality
Sleep quality
Testosterone supports the amount of time you spend in the most important stages of sleep.
Physical
Muscle and physical performance
Testosterone increases muscle protein synthesis, meaning your body gets better at building muscle after workouts.
Mood
Improved mood
Optimal testosterone stabilises mood, reduces anxiety, and boosts confidence and motivation.
Focus
Focus more
Healthy levels will sharpen focus, improve memory, and enhance mental clarity.
Long term
Long-term health
Testosterone supports heart health, strengthens bones, protects brain function, and lowers chronic disease risk.
Healthy sex life
Sexual function
Healthy testosterone levels, healthy sex life. A healthy range leads to overall  intimacy.
BENEFITS

Get back to peak performance with TRT

For many men with low testosterone, TRT is a game-changer. Regain your vitality and improve your quality of life, starting now.

Benefits for the body
Higher testosterone levels
TRT works by returning your testosterone to the normal physiological level.¹
Better physical ability
Increase your muscle strength, size and and mass.2
Increased muscle
With TRT, your muscles build new tissue faster and more efficiently after exercise.3
Better sleep
Studies show that sleep disturbance significantly improves in patients on testosterone replacement therapy.4
Increased libido
Increasing your testosterone levels can enhance sex drive, improve erectile function and increase overall sexual satisfaction.5
Benefits for the mind
Better mood
Studies show that patients feel more energetic, friendlier, less irritable and generally in a better mood after starting TRT.6
Improved memory
Studies show that testosterone replacement therapy can significantly improve cognitive function in healthy older men.7
Increased energy
86% of patients saw an improvement in their energy levels after 3 months.8
Enjoyment of life
79% of patients saw an increase in their enjoyment of life after 6 months.8
Overall Satisfaction
90% of patients were satisfied with the treatment they received.8
Citations
Citations
¹ Hackett, Geoffrey et al. “The British Society for Sexual Medicine Guidelines on Male Adult Testosterone Deficiency, with Statements for Practice.” The world journal of men's health vol. 41,3 (2023): 508-537. doi:10.5534/wjmh.221027
2 Bhasin, S et al. “Testosterone dose-response relationships in healthy young men.” American journal of physiology. Endocrinology and metabolism vol. 281,6 (2001): E1172-81. doi:10.1152/ajpendo.2001.281.6.E1172
3 Brodsky, I G et al. “Effects of testosterone replacement on muscle mass and muscle protein synthesis in hypogonadal men--a clinical research center study.” The Journal of clinical endocrinology and metabolism vol. 81,10 (1996): 3469-75. doi:10.1210/jcem.81.10.8855787"
4 Shigehara, Kazuyoshi et al. “Sleep disturbance as a clinical sign for severe hypogonadism: efficacy of testosterone replacement therapy on sleep disturbance among hypogonadal men without obstructive sleep apnea.” The aging male : the official journal of the International Society for the Study of the Aging Male vol. 21,2 (2018): 99-105. doi:10.1080/13685538.2017.1378320"
5 Cunningham, Glenn R et al. “Testosterone Treatment and Sexual Function in Older Men With Low Testosterone Levels.” The Journal of clinical endocrinology and metabolism vol. 101,8 (2016): 3096-104. doi:10.1210/jc.2016-1645
6 Wang, C et al. “Testosterone replacement therapy improves mood in hypogonadal men--a clinical research center study.” The Journal of clinical endocrinology and metabolism vol. 81,10 (1996): 3578-83. doi:10.1210/jcem.81.10.88558045
7 Cherrier, M M et al. “Testosterone supplementation improves spatial and verbal memory in healthy older men.” Neurology vol. 57,1 (2001): 80-8. doi:10.1212/wnl.57.1.80
8 Based on data on VOY clinical care data of over 2000 patients over the last 18 months
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The Journey

The first step towards a stronger you

Take the guesswork out of your health. Get tested and move forward with a treatment plan that works for you.

1
Low testosterone diagnosis

Get your T. levels checked with our at-home blood test kit. We’ll arrange further enhanced testing if necessary.

2
Tailored Treatment

Your doctor will look at your unique data (your goals, symptoms, medical history, etc.) to find the right approach.

3
Ongoing clinical care

We do blood tests every 3-6 months with full doctor report & consultation, to ensure you hit your goals!

Testimonials

Voy is transforming lives

Caret
Caret
145%
increase in Total Testosterone

"The whole journey has been life changing. I feel better within myself, and I know that people around me are starting to benefit from that — it’s been a big game changer."

Decreased weight
Brain fog lifted
Stephen, 53
Testosterone
Play
127%
increase in Total Testosterone

"I have more life about me, I feel younger, I feel happier, I feel better — it’s now enabled me to focus on different spheres of my life"

Improved sleep
Increased motivation
James, 39
Testosterone
Play
118%
increase in Total Testosterone

"Since being on TRT my boss has seen such a difference in me — my energy levels are where they should be, and I’m back to being me, it’s fantastic"

Increased energy
Improved mood
Andy, 47
Testosterone
Play
Read our reviews
FAQ

Testosterone Replacement Therapy

Jeff
Curated by Dr. Jeff Foster, Testosterone Medical Expert
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What is Testosterone Deficiency (TD)?

Low testosterone is a common condition that men can be born with or develop due to age, stress, disease, physical trauma, an unhealthy lifestyle or environmental factors.

What are the key symptoms of TD?

Men with low testosterone often report low mood, irritability, fatigue, anxiety, reduced libido or difficulty achieving an erection. Other common symptoms include brain fog, lack of motivation, low confidence, difficulty losing weight and difficulty gaining muscle. These symptoms may also be caused by stress, diet, sleep apnoea or other medical conditions. Our blood test helps rule out hormones so you can find the root cause.

How do you test for TD?

Blood testing is the only way to know for sure if you have a testosterone deficiency. Our Initial Testosterone Blood Test (a simple finger-prick test) can be taken at home. If the results show that you have low testosterone and you’d like to start testosterone replacement therapy, medical guidelines require you to take a second, more comprehensive blood test first to confirm your testosterone level is persistently low and to get a baseline measure of your core health before you start TRT. This one is a venous test which has to be administered by a nurse or phlebotomist.

How common is TD?

Research has confirmed that testosterone counts in men are significantly lower than they were just a few decades ago. One in four men over the age of 30 may have abnormally low testosterone levels according to scientific studies.1

Around the age of 30 testosterone levels naturally begin to decline, but it’s usually a very gradual process. For most men, testosterone levels drop between one to two percent each year from the age of 35. Free testosterone levels also drop considerably as men age, making TD even more common. An increase in obesity, hormone-disrupting environmental chemicals, and anabolic steroid use is also making testosterone deficiency in younger men more prevalent than ever.

*Travison, Thomas G et al. “A population-level decline in serum testosterone levels in American men.” The Journal of clinical endocrinology and metabolism vol. 92,1 (2007): 196-202. doi:10.1210/jc.2006-1375

Will I be able to talk to a licensed doctor?

Yes, you’ll have a consultation with one of our doctors to discuss your test results and they can provide a personalised treatment plan tailored to your needs. Our doctors specialise in TRT for men and are all registered with the General Medical Council.

How do these blood tests lead to treatment?

Our initial blood test will establish whether you have a testosterone deficiency. If the first test shows that you have low testosterone you’ll need to take our second, more comprehensive blood test if you’d like to start TRT - this is to confirm you do indeed have persistently low testosterone and to get a baseline measure of your core health before you start TRT.

How soon will the test arrive?

Our blood test kits usually arrive within three working days. It may take longer over public holidays.

When will I get my results?

We’ll get in touch to give you your results within two to three business days.

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Test kit only

Organise your own sample collection

How it works
Receive your test kit in 2-3 working days
Organise your own venous draw by a qualified professional
Post your sample to our UKAS Certified lab using the enclosed pre paid envelope
Cost
£49.95
Includes test kit only
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Test kit + clinic appointment

Your venous sample will be collected by a registered nurse at one of our partner clinics.

Our clinics
Our partner clinics (Goodbody and Superdrug) have hundreds of locations across the UK, providing convenient, local appointments for venous blood draw.

Search for a partner clinic near you
How it works
Receive your test kit in 2-3 working days
Book an appointment at one of our partner clinics through their online portal. You can choose between Goodbody and Superdrug clinics
Take your test kit to your clinic appointment and a registered nurse will collect your venous sample
Post your sample to our UKAS Certified lab using the enclosed pre paid envelope
Cost
£79.95
Includes test kit and clinic appointment
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Test kit + at-home nurse visit

Your venous sample will be collected by a registered nurse from the privacy of your own home.

How it works
Receive your test kit in 2-3 working days
Book an at home visit by a registered nurse using our online portal
Your venous sample will be collected from the comfort of your own home
Post your sample to our UKAS Certified lab using the enclosed pre paid envelope
Cost
£119.95
Includes test kit and home visit
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What happens during your consultation

You’ll have an in-depth discussion with one of our TRT doctors so that they can design a personalised, sustainable protocol for you which results in real improvements. The consultation will cover the following topics.

1. Medical history and lifestyle
Your doctor will gain more insight into your condition, and suitable treatment options, by learning about your medical history and lifestyle.
2. Blood test results
Your doctor will talk you through the results of your enhanced blood test. Aside from your testosterone levels, there are other physiological factors at play that can influence the response of TRT. We take all this into consideration when creating your TRT plan.
3. Your symptoms
You’ll be able to discuss the symptoms you’re experiencing and how they’re affecting you.
4. Treatment options
Your doctor will discuss treatment options with you and design a personalised treatment plan that works specifically for you, including the right medication at just the right dose to suit your individual needs.
closeTreatment
Oral treatment

In cases where injections or topical treatments aren’t suitable, oral testosterone treatments might be prescribed. This method of treatment is incredibly convenient since it involves taking just one daily tablet, and has the added perk of not requiring any injections. This form of treatment helps to maintain fertility whilst increasing testosterone levels, but isn’t effective for some men.

Cost
£99 per month
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Injectable treatment

Injectables are a popular choice, in fact, 98% of our patients use this method! Not only are they convenient – taking around 10 minutes to administer, Two or three per week – they’re also highly effective as they maintain steady testosterone levels over time. Having said that, not everyone likes the idea of having to inject themselves with medication, so they aren’t for everyone.

Cost
£99 - £169 per month
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Topical treatment

Topical testosterone treatments are a great option for those who prefer a needle-free approach, as they come in the form of a cream or gel. They’re applied daily and although they work well for some men, the overall outcome of the treatment can be affected if they’re not absorbed properly.

Cost
£129 - £159 per month
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Testosterone monitoring tests

Regular monitoring is essential to ensure your treatment remains safe and effective. Your TRT doctor will check in with you at the 5-week mark, and further blood tests (now included free with your subscription) will be conducted at 3, 6, and 12 months. These tests allow your doctor to track your progress, identify any side effects, and make precise adjustments to your treatment plan. Our monitoring blood tests, normally £70, are now completely free as part of your plan.

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Convenient at-home testing

Our at-home blood tests make getting an accurate diagnosis easy.

Discreet delivery to your home
We’ll send your at-home blood testing kit to your doorstep free of charge in discreet packaging.
Easy to use
We’ll provide easy-to-follow instructions and a step-by-step video tutorial that shows you how to take a blood sample. We want to make sure that you feel confident and comfortable using your kit safely in the privacy of your home.
Review your results online
You’ll be able to access invaluable data about your testosterone levels online within 2 to 5 days. Our team of TRT specialists will review your results and give you clear, actionable advice on the next steps to take.
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UKAS-certified laboratories

Accuracy is key when it comes to diagnosing low testosterone. We partner exclusively with UKAS-certified laboratories to ensure clinically valid, accurate results.

Our labs
We work directly with independent UKAS-certified laboratories which are compliant with ISO laboratory standards. These labs are recognised for maintaining rigorous international standards in their monitoring techniques, ensuring that the test results they produce are accurate and reliable.
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Track your results online

You’ll be able to access your easy-to-understand results from your secure online account within 2 to 5 days.

Insights that matter
You’ll receive clear, meaningful insights into your testosterone levels and the biomarkers that influence them.
Secure online dashboard
Use our online dashboard to view your results from the comfort of your home.
Get personalised advice
One of our TRT specialists will then walk you through the results, answer all of your questions and guide you through the next steps.
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Convenient testing options

This venous blood test requires a qualified health professional to take your sample.

You can choose from the following options:

At a clinic - £79.95
Simply attend your clinic appointment on the date and time that you book to get your sample taken by a nurse. After this, please post the sample back to us using the Tracked-24 envelope.
A home visit - £119.95
We’ll provide easy-to-follow instructions and a step-by-step video tutorial that shows you how to take a blood sample. We want to make sure that you feel confident and comfortable using your kit safely in the privacy of your home.
Just the kit - £49.50
Only choose this option if you know a health professional qualified to take your sample.

You’ll be responsible for any additional fees incurred.We'll send you everything you need for your sample collection including the Tracked-24 return envelope which you’ll use ti send the sample back to us.
Blood test
Start with a testosterone blood test
Start with a test
£55
£30.25
Get started