Testosterone (TRT) · coming soon

Tired, flat,not yourself?Worth aproper look.

Low energy, low mood and a lower sex drive have many causes, and low testosterone is only one of them. When Zett opens, UK clinicians will help you find out what is going on, starting with blood tests, and talk through testosterone replacement therapy (TRT) if it is suitable.

Start the testosterone check About 2 minutes. Free.
In plain words

What's usually going on

Testosterone falls slowly with age, and can fall further with poor sleep, weight gain, stress and some medicines. Tiredness or a lower sex drive overlap with many other things, so a blood test, taken at the right time of day, is the only way to know.

Some men with confirmed low levels are offered TRT. For others, treating the cause is the better route. The honest answer depends on your results and your health.

Wording under reviewClinician sign-off before publishing.

What Zett will offer

When we open, all of this happens online.

  • Blood tests first

    Testosterone and related blood tests, with the results explained in plain words by a UK clinician. Test details to be confirmed.

  • A decision made together

    If your levels are low, your clinician explains whether TRT is suitable, the options and what to expect.

  • Monitoring that continues

    Regular blood tests and check-ins, with your Daily Debrief alongside, so changes are noticed early.

Testosterone check · two minutes

Ten questions. Anonymous. A plain result and what to do next.

The standard ADAM questionnaire, answered in private. Your result stays on screen; you can download it as a PDF.

Start the testosterone check
Questions

Straight answers

Short answer first, detail after. All questions

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PORTRAIT
Clinically reviewed by

Dr Placeholder Name · GP, Zett clinical lead

GMC number 0000000 · Reviewed on 26 October 2026

Short bio placeholder: a UK-registered GP with a special interest in men's health, who reviews every health page before it is published and again at least once a year.

Waiting list

Hear first when testosterone care opens.

One waiting list for everything Zett offers. We'll email you when we open.

Join the waiting list

Zett has applied to the Care Quality Commission and is not yet registered.