GP vs Endocrinologist vs Urologist: Who to See for Low Testosterone

If you suspect low testosterone, you have several types of doctor you could see. Most men don't need a specialist for the initial workup, but specialist input becomes important in specific situations. This guide explains who is useful for what.

1General practitioner (GP) or men's health clinic

What they do: Initial symptom assessment, basic blood work, lifestyle counselling, screening for common causes (thyroid, sleep apnoea, depression, medications). For most men with low testosterone, this is the right starting point.

When sufficient: Straightforward cases of late-onset hypogonadism with no atypical features, no fertility concerns requiring specialist input, and no signs of a specific underlying condition.

Particularly useful: Telemedicine GPs and men's health clinics that focus on this kind of work — they tend to be more familiar with the full workup than general primary care.

2Endocrinologist

What they do: Endocrinology specialists are the experts on hormone systems. They handle complex cases of hypogonadism, particularly when the cause is pituitary or hypothalamic, when results are confusing or atypical, or when multiple endocrine systems are involved (thyroid, adrenal, prolactin).

When to see one: Very low testosterone with very low LH/FSH (suggests secondary cause needing investigation), high prolactin, suspicion of pituitary disease, complex metabolic picture, or when initial treatment hasn't worked as expected.

3Urologist

What they do: Urologists handle the urinary tract and male reproductive system. Many urologists — particularly those with andrology focus — are deeply experienced in male hypogonadism, particularly when the cause is testicular or when fertility considerations are central.

When to see one: Fertility-related cases, suspected testicular causes (primary hypogonadism), prostate-related questions, or as a referral from initial workup.

4A practical workflow

• Start with a GP, men's health clinic, or telemedicine for initial assessment
• Basic blood panel (testosterone, LH, FSH, prolactin, thyroid, full blood count)
• If results suggest pituitary or complex endocrine issue: endocrinology referral
• If fertility or testicular causes are central: urology referral
• For routine TRT initiation and monitoring after appropriate workup: GP, men's health clinic, or telemedicine can manage

5In Singapore specifically

All three specialist routes are available in Singapore through the restructured hospitals (SGH, NUH, TTSH, NUH) and private specialists. GP and telemedicine routes are widely accessible. Referrals between routes are common and appropriate.

6Frequently asked questions

Do I need a referral to see an endocrinologist?

In the public system, typically yes (via GP or polyclinic referral). In the private system, you can usually book directly, though referral letters help with continuity.

Which type is best for ongoing TRT management?

For most men, a GP or men's health doctor familiar with hormone management is sufficient. Specialist input is useful for complex cases.

Can Noah handle the full pathway?

For most cases, yes. For complex cases or where specialist input is needed, your Noah doctor will refer.

7Speak to a doctor on Noah

If you're not sure where to start, a Singapore-licensed doctor on Noah can guide you. Book a confidential consultation here.

8References

Bhasin S, et al. Endocrine Society Clinical Practice Guideline. JCEM. 2018.

Mulhall JP, et al. AUA Guideline on Testosterone Deficiency. 2018 (updated 2023).

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