Everything is twice as hard with low testosterone

Feel like you're running on empty? If you’ve been blaming work, age, or burnout, it might be time to look deeper.

Find out if you have low testosterone

Fatigue

Low testosterone can leave you feeling drained, with less energy to get through the day

Low sex drive

When testosterone is low, sexual desire and arousal often drop

Muscle loss

When testosterone is low, muscle is harder to build or maintain

Difficulty concentrating

Low testosterone can make it harder to think clearly or stay focused.

Low testosterone symptoms can take the joy out of life

Can affect:

Low mood

Anxiety

Sex drive

Muscle mass

Lack of focus

Energy levels

Weight gain

Erectile dysfunction

Sleep quality

Do you experience these symptoms?

Answer 10 quick questions to assess if low testosterone could be holding you back.

Take the quiz

The hormone that’s
holding men back

Prevalence

Testosterone levels have more than halved in the last 50 years.^¹

Today's lifestyle is working against men. Testosterone deficiency is becoming more common, affecting energy, motivation, and overall vitality.

DIAGNOSIS

Only 1 in 20 are diagnosed.²

Too many men are suffering from the life-altering symptoms of this under-diagnosed condition.

Citations

¹Oral presentation, Session 61, 42nd Annual Meeting of the European Society of Human Reproduction and Embryology; 7 July 2026
² Liu, Vivian N et al. “Awareness and prevalence of the symptoms of testosterone deficiency: a cross-sectional survey of community-dwelling men in the UK.”BMJ openvol. 15,7 e094145. 10 Jul. 2025, doi:10.1136/bmjopen-2024-094145”

Learn more about symptoms

Check your testosterone levels from home

A quick at-home finger-prick blood test provides all we need to accurately determine if you have a testosterone deficiency.

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Results in as little as 3 days*

4x total biomarkers

Reveal the cause of fatigue & burnout

4 Biomarkers analysed

Free Testosterone
Testosterone
Albumin
Sex-Hormone Binding Globulin (SHBG)

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1 in 4 men have low testosterone. Find out if you're one of the 90% that remains undiagnosed.

*We cannot guarantee results within 3 days. Timing depends on when the order is placed and all required steps are completed, as well as postal service performance, lab capacity, and other external factors.

THE SCIENCE

A 360° view of your testosterone

Analysing these biomarkers collectively allows our doctors to accurately measure your testosterone levels and their availability for use in the body.

Total testosterone

This is the total amount of testosterone found in the blood. Some of it is attached to proteins, such as Sex-Hormone Binding Globulin.

Free testosterone

This is the testosterone which is not attached to any proteins so it’s free to be used by the body’s cells. The more you have of it, the better.

SHBG

This protein regulates hormone levels by binding to sex hormones, including testosterone. When your SHBG levels are high, your body has less free testosterone available.

Albumine

Another protein produced in the liver which binds to testosterone, inhibiting its ability to be used by the body’s cells.

"We all want to feel 10 years younger, but that's not going to happen without healthy testosterone levels. Take a test and see where you stand."

Jason Fox, 49 years old

Men's health advocate

TV personality

Voy partner

Jason Fox's go-to health check

FUNDAMENTALS

How testing works

Take the blood test

Take our quick at-home finger-prick test before 11am, when T-levels are at their highest, to determine if you have low testosterone.

Post your sample

Simply place your sample in the secure packaging provided and send it to our CQC-registered lab where your blood will be analysed.

Review your results

Access invaluable health data online in just a few days. Our experts will review your results and give you clear actionable advice.

Testosterone deficiency is when your testosterone level is persistently low and you have symptoms that go with it. Some men are born with it, others develop it through age, stress, illness, physical trauma, lifestyle or environmental factors.

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 can also be caused by stress, diet, sleep apnoea or other conditions, which is why a blood test helps: it rules hormones in or out so you know where to look next.

A blood test is the only way to know. Our initial test is a finger-prick test you take at home. If it shows low testosterone and you'd like to go further, medical guidelines require a second, more comprehensive test to confirm your level is persistently low and to give your doctor a baseline of your wider health before you start a TRT service. That one is a venous test, taken by a nurse or phlebotomist.

Yes, gradually. For most men levels drop by around 1 to 2% a year from the mid-thirties. Low testosterone is also more common in men living with obesity or certain long-term conditions.

Yes. You'll have a consultation with one of our doctors to go through your results, and they'll talk through whether treatment is suitable for you. Our doctors specialise in testosterone and are all registered with the General Medical Council.

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

For the quickest turnaround, post your sample for morning collection on a working day. We'll come back to you with your results within one to three business days.