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Patient guide · Hormones

Low testosterone: the signs and the test

Tired, weaker, less interested in sex — low testosterone is one possible cause, and the only way to know is the right blood test at the right time of day.

The symptoms

The American Urological Association lists these among the signs of testosterone deficiency (AUA guideline):

  • Reduced energy and fatigue
  • Loss of lean muscle
  • A lower sex drive
  • Weaker erections
  • Depressed mood
  • Poor concentration
  • Irritability

Every one of them has other possible causes — poor sleep, thyroid disease, weight, medications, stress. That is why symptoms alone are not enough.

How it is diagnosed

The AUA guideline treats a total testosterone below 300 ng/dL as a reasonable cut-off for low testosterone, and it calls for two separate measurements taken in the early morning before the diagnosis is made (AUA).

How Dr. Wood approaches it

  • Labs before a prescription. Testosterone is started only when labs and symptoms show it is clinically indicated.
  • A choice of forms. Cream, pellets or injections, and HCG or other medicines that support the body’s own production.
  • Regular checks. Labs every 8 to 12 weeks while the dose is set.

Weight and testosterone

Weight and hormones often travel together, so the same blood work can guide both. Many men pair men’s health care with medical weight management. The first consultation is complimentary — book a “Men’s Health” visit.

Questions

Questions about this guide

What testosterone level is considered low?

The American Urological Association treats a total testosterone below 300 ng/dL as a reasonable cut-off, confirmed on two separate early-morning tests.

How many testosterone tests are needed for a diagnosis?

Two. The AUA guideline calls for two separate early-morning measurements below 300 ng/dL, together with symptoms, before testosterone deficiency is diagnosed.

What are the first signs of low testosterone?

Common ones are low energy and fatigue, lost muscle, a lower sex drive, weaker erections, low mood, poor concentration and irritability — all of which can have other causes too.

Can low testosterone be caused by something else?

The symptoms can. Poor sleep, thyroid disease, weight and some medications produce similar complaints, which is why Dr. Wood checks a broader panel before treating.

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