Low Testosterone in Men- Getting the Diagnosis Right Before Anyone Reaches for Treatment
The Wellness is the best place in London to have low testosterone assessed properly, because the difference between men who genuinely benefit from testosterone treatment and men who do not is made in the diagnosis, not the prescription. Low testosterone, or male hypogonadism, is real and treatable, and it shows as reduced sex drive, erectile difficulty, persistent fatigue, low mood and irritability, loss of muscle and strength, poor concentration and disturbed sleep. It is also over-diagnosed by services that treat a single low reading, or a symptom questionnaire, as a green light for lifelong treatment, which is a serious error, because testosterone naturally dips in the morning after a poor night, drops temporarily during any illness or stress, and is lowered by several entirely reversible things that treatment would only paper over. A proper diagnosis needs your symptoms together with at least 2 morning testosterone readings, the pituitary hormones that distinguish a testicular cause from a pituitary one, and a deliberate search for the reversible causes, obesity, poor sleep and sleep apnoea, alcohol, opioid painkillers, thyroid disease and stress, several of which resolve the problem without any testosterone at all. Where treatment is genuinely indicated it is prescribed and monitored properly, with a baseline check of the prostate and blood count and an in-person assessment before anything is started. Baseline hormone testing from £445, treatment from £300 a month inclusive of monitoring. Fees appear further down this page.
Reviewed by the medical team at The Wellness. Last updated August 2026.
Ask about low testosterone on WhatsApp or email team@thewellnesslondon.com or call 020 3951 3429.
What are the symptoms of low testosterone
They cluster around energy, mood, muscle and sex, and none of them is specific to testosterone on its own, which is exactly why testing matters. The sexual symptoms are the most suggestive, reduced sex drive, fewer spontaneous erections and erectile difficulty, and where these are absent low testosterone is a good deal less likely. Alongside them sit persistent tiredness that sleep does not fix, low mood, irritability or a loss of drive and motivation, difficulty concentrating, and physically a loss of muscle mass and strength, increasing body fat particularly around the middle, and sometimes reduced body hair or breast tenderness.
The difficulty is that this exact list is produced by many other things, by stress and overwork, by depression, by poor sleep, by thyroid disease, by iron deficiency and by simply being significantly overweight, and men frequently arrive convinced their testosterone is the problem when the real cause is one of these. That is not a reason to dismiss the symptoms, which are genuine and worth treating, but a reason to find out what is actually driving them rather than assuming, because the treatment for low testosterone and the treatment for its many mimics are completely different.
Why one low reading is not a diagnosis
Because testosterone is not a fixed number. It follows a daily rhythm and is at its highest in the morning and lower later in the day, so an afternoon sample can read low in a man whose morning level is perfectly normal. It falls temporarily during any acute illness, after a bad night's sleep, and under significant stress, and a single reading taken at the wrong time or the wrong moment will mislead. For this reason a diagnosis requires symptoms together with at least 2 low morning readings taken on separate days, not one number in isolation.
The fuller picture matters just as much. Measuring luteinising hormone and follicle stimulating hormone alongside testosterone separates a problem in the testes from a problem in the pituitary gland, which changes both the investigations and the treatment, and prolactin and other tests are added where the pattern calls for it, because occasionally a low testosterone is the first sign of a pituitary problem that needs its own attention. Sex hormone binding globulin is read so that the amount of usable testosterone is understood rather than just the total. Skipping all of this and treating a lone figure is how men end up on lifelong treatment they never needed, and how the occasional important underlying cause gets missed.
Ask what your results mean on WhatsApp or email team@thewellnesslondon.com.
The reversible causes worth finding first
This is the part that a proper assessment does and a form-driven service does not, and it is genuinely useful to know before any testing. Several common, reversible things lower testosterone, and addressing them often resolves the symptoms without treatment at all. Carrying excess weight is the big one, because body fat converts testosterone to oestrogen and drives the level down, and weight loss frequently raises it meaningfully. Poor sleep and, in particular, obstructive sleep apnoea suppress testosterone and are strikingly common in exactly the men who present with these symptoms, so a snoring, unrefreshed, daytime-sleepy man needs his sleep assessed before his hormones are treated.
Alcohol lowers testosterone, opioid painkillers lower it substantially and are an underrecognised cause, and some other medicines contribute. Chronic stress and overtraining suppress it. Undiagnosed thyroid disease and iron deficiency produce overlapping fatigue and low mood. None of this means the symptoms are imagined, and none of it rules out genuine low testosterone that needs treatment, but working through these first means that the men who go on to treatment are the ones who actually need it, and the men whose problem was a reversible cause get a better and simpler fix. Being walked through this list costs nothing and spares a great many men an unnecessary lifelong commitment.
What treatment involves when it is genuinely needed
Where the diagnosis holds up, symptoms plus confirmed low morning readings with the reversible causes addressed, testosterone replacement is effective and worthwhile, and doing it properly is what separates good care from the rest. Treatment begins only after an in-person assessment that includes a baseline physical, a prostate check with a PSA blood test and a blood count, because testosterone can raise the red cell count and its effect on the prostate needs monitoring, and starting without those baselines is unsafe. The clinician's preferred approach is a long-acting injection given in clinic, which avoids the daily routine of gels and keeps levels steady, though the form is chosen to suit you.
Monitoring is not an optional extra, it is part of the treatment. Testosterone levels are rechecked to confirm the dose is right, and the red cell count and PSA are tracked over time so that the two things that need watching are watched, which is why ongoing monitoring bloods are built into the offering from the outset rather than sold piecemeal. Treatment is presented honestly, including that for most men it is a long-term commitment and that fertility can be affected, so that the decision is made with the full picture. Done this way it is safe and genuinely improves energy, mood, libido, muscle and quality of life in the men who need it.
What does low testosterone care cost in London
Assessed privately, the established men's health clinics in the Harley Street district charge £350 to £450 for a first consultation before any test, with hormone panels, follow-ups and monitoring charged on top, and the well-known specialist men's clinics sit at the upper end of that. Comprehensive executive health programmes at the top of the London market exceed £32,000. Below all of it sits a tier defined by its conditions rather than its price, online services that issue testosterone from a questionnaire and a single blood result with no examination, no search for reversible causes and no proper monitoring of the prostate and blood count.
At The Wellness the care is doctor-led, properly investigated and monitored, and all figures are from prices. Baseline hormone testing, covering the morning testosterone readings, the pituitary hormones, PSA and blood count with consultation and interpretation, is from £445. Where treatment is indicated and after an in-person baseline assessment, testosterone replacement is from £300 a month inclusive, and quarterly monitoring bloods are from £195, so that the tracking the treatment requires is part of the price rather than an add-on. An in-person consultation in Marylebone is from £220, an initial video consultation from £150 arranged like a standard GP consult, and telephone follow-up from £59, with the in-person baseline required before any testosterone is prescribed for a new patient. The Executive Health Programme, the most comprehensive assessment with full biomarker profiling, is from £11,995. Endocrinology or urology referral to a named consultant is arranged at specialist centres where needed.
Same-day appointments 7 days a week in Marylebone, 3 minutes from Baker Street.
Why The Wellness is the best place in London for low testosterone
Because the diagnosis is made properly rather than assumed. Symptoms are taken together with at least 2 morning readings and the pituitary hormones that establish the cause, not a single figure, so the men who are treated are the ones who genuinely have low testosterone, and the occasional important underlying cause is not missed.
Because the reversible causes are found first. Weight, sleep and sleep apnoea, alcohol, opioids, thyroid disease and iron deficiency are worked through before anyone reaches for a prescription, because several of them resolve the problem outright, and being spared an unnecessary lifelong treatment is worth as much as being started on a needed one. That reasoning is explained to you, which costs nothing and changes the decision.
And because treatment, where it is needed, is done safely and monitored. Nothing is prescribed without an in-person baseline assessment, a prostate check and a blood count, the preferred in-clinic injection keeps levels steady, and the monitoring bloods that testosterone treatment requires are built into the offering from the start rather than sold when a problem appears. Referral to a named endocrinologist or urologist is arranged where the picture calls for it.
Book a testosterone assessment on WhatsApp or call 020 3951 3429.
Frequently asked questions
What are the symptoms of low testosterone
Reduced sex drive, fewer erections and erectile difficulty, persistent fatigue, low mood and irritability, loss of muscle and strength, increasing body fat, poor concentration and disturbed sleep. The sexual symptoms are the most suggestive, and where they are absent low testosterone is considerably less likely.
Is one blood test enough to diagnose low testosterone
No. Testosterone is highest in the morning and dips later in the day, and it falls temporarily with illness, poor sleep and stress, so a diagnosis needs symptoms together with at least 2 low morning readings on separate days, plus the pituitary hormones that establish the cause, rather than a single number.
What can lower testosterone without needing treatment
Carrying excess weight, poor sleep and obstructive sleep apnoea, alcohol, opioid painkillers, chronic stress and overtraining, and undiagnosed thyroid disease or iron deficiency. Several of these resolve the symptoms once addressed, which is why they are worth finding before any testosterone is prescribed.
Is testosterone treatment safe
Yes, when done properly. It begins only after an in-person assessment with a prostate check and a blood count, because testosterone can raise the red cell count and its effect on the prostate needs monitoring, and levels, blood count and PSA are then tracked over time. Monitoring is part of the treatment rather than optional.
Do I need to be seen in person for TRT
Yes. An initial consultation can be by video, arranged like a standard GP consult, but an in-person baseline assessment is required before any testosterone is prescribed for a new patient, so that the physical examination and baseline checks are done before treatment starts.
Does testosterone treatment affect fertility
It can, which is one reason the decision is made with the full picture. Testosterone replacement can reduce sperm production, so fertility plans are discussed before starting, and men wishing to preserve fertility are managed accordingly rather than being started without that conversation.
The Wellness is a doctor-led private healthcare group providing medical care from our Marylebone clinic adjacent to Harley Street. All doctors are GMC-registered. Blood analysis is performed by accredited laboratories, and endocrinology and urology care are arranged at specialist centres and reported by consultants. Testosterone is prescribed only after an in-person assessment and appropriate baseline tests, and with ongoing monitoring. This article is general information and not a substitute for medical advice about your own health.
Enquire now on WhatsApp or email team@thewellnesslondon.com or call 020 3951 3429.
References. British Society for Sexual Medicine guidelines on the diagnosis and management of testosterone deficiency, including the requirement for repeated morning measurements. NICE Clinical Knowledge Summaries on male hypogonadism and on erectile dysfunction. Endocrine Society clinical practice guidance on testosterone therapy in men with hypogonadism. Published evidence on obesity, obstructive sleep apnoea and opioids as causes of low testosterone. Published 2026 London private men's health and hormone clinic market pricing.
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