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Renvo
Free symptom checker

Do I have low testosterone?

Twelve plain-English questions about energy, mood, strength and sex drive. It takes a couple of minutes, it's private, and it helps you work out whether a blood test is worth asking about.

Start the checker
Symptom checker

Check your testosterone symptoms

Thinking about the last six months or so, how often does each statement sound like you? There are no right or wrong answers. Go with your first instinct.

Before you start

This is a symptom checker, not a diagnosis, and it cannot tell you whether your testosterone is low. That needs a blood test. Your answers stay on this page: nothing is saved or sent anywhere, and they're cleared when you leave.

  1. Statement 1 of 12My interest in sex is lower than it used to be.
  2. Statement 2 of 12I get fewer spontaneous or morning erections than I used to.
  3. Statement 3 of 12I have difficulty getting or keeping an erection.
  4. Statement 4 of 12I feel tired or short on energy, even after a reasonable night's sleep.
  5. Statement 5 of 12I feel low, flat or more irritable than usual.
  6. Statement 6 of 12I've noticed I'm physically weaker, or it's harder to build or hold muscle.
  7. Statement 7 of 12I've gained body fat, particularly around my middle, without a clear change in habits.
  8. Statement 8 of 12I find it harder to concentrate, or my memory feels foggier than it was.
  9. Statement 9 of 12My sleep is poor, broken, or I wake up unrefreshed.
  10. Statement 10 of 12I've lost drive or motivation for things I used to care about.
  11. Statement 11 of 12I get hot flushes or sweats that aren't explained by the weather or exercise.
  12. Statement 12 of 12I take longer to recover after exercise or physical work than I used to.

0 of 12 answered

The short answer

Can you tell from symptoms alone?

No, and that's the honest answer rather than a cautious one. Testosterone is a hormone measured in the blood, so the only way to know your level is to test it. What a symptom checker can do is tell you whether your experience looks like the pattern clinicians investigate — which is useful, because many men put these changes down to age or stress and never ask.

The European Male Ageing Study found that the symptoms most consistently linked to low testosterone were the sexual ones — reduced sex drive, fewer morning erections and erectile difficulty — while tiredness and low mood, although common, were much weaker signals (Wu et al., NEJM, 2010). That's why this checker separates the two groups in your result.

What to look for

Symptoms clinicians ask about

Two groups, and the distinction matters. The first is more specific to testosterone. The second is common to a great many conditions, which is why it is never assessed in isolation (NHS).

More specific signs
  • Less interest in sex than you used to have
  • Fewer spontaneous or morning erections
  • Difficulty getting or keeping an erection
Less specific signs
  • Tiredness that sleep doesn't fix
  • Low mood, flatness or irritability
  • Losing muscle strength, or struggling to build it
  • Gaining fat around the middle without a change in habits
  • Difficulty concentrating, or a foggier memory
  • Hot flushes or sweats with no obvious cause
Next steps

How testosterone is actually measured

From a blood sample taken in the morning, because testosterone is highest early in the day and drifts down as the day goes on. UK guidance is that a single low reading isn't enough — it should be confirmed with a second morning sample before anyone concludes you have testosterone deficiency (BSSM, 2023).

A clinician will usually look beyond testosterone too, because thyroid problems, sleep apnoea, anaemia, diabetes and depression produce much the same symptoms. Our guide to testosterone testing in the UK explains what's measured and how to read a result, and low testosterone symptoms goes through each symptom in more detail.

Honest FAQs

Can a questionnaire tell me if I have low testosterone?

No. Testosterone is a hormone measured in the blood, so no set of questions can tell you your level. A symptom checker can only tell you whether your experience overlaps with the picture clinicians look for, which helps you decide whether to ask for a test.

What are the symptoms of low testosterone?

The most consistently linked symptoms are reduced sex drive, fewer morning erections and difficulty getting an erection. Tiredness, low mood, irritability, reduced muscle strength, increased body fat and poor concentration are also reported, but they are far less specific and have many other causes.

How is low testosterone actually diagnosed?

On symptoms plus blood tests. Testosterone is measured from a morning sample, because levels are highest early in the day and fall later on. A single result is not enough: UK guidance is to confirm a low reading with a second morning sample before diagnosing testosterone deficiency.

Could something else explain these symptoms?

Very often, yes. Thyroid problems, sleep apnoea, depression, anaemia, diabetes, chronic stress and poor sleep all produce a similar picture. That is exactly why symptoms alone are not used to diagnose testosterone deficiency, and why a clinician will look wider than one hormone.

Does low testosterone mean I need treatment?

Not necessarily. Whether any treatment is appropriate is a clinical decision made after blood tests and a full assessment, taking your symptoms, your results and your medical history together. Testosterone is a prescription-only medicine and is not prescribed on the basis of a questionnaire.

Does testosterone fall naturally with age?

Levels do decline gradually from around the age of 30, but that slow fall is not the same as testosterone deficiency, and it does not by itself explain significant symptoms. Sudden or marked changes are worth investigating rather than putting down to age.

Are my answers saved anywhere?

No. Your answers stay in your browser while the page is open. Nothing is saved, and nothing about your answers or result is sent to us or anyone else. Closing or refreshing the page clears them.

Sources

The health information on this page is based on UK guidance:

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