Testosterone
Low Testosterone: Symptoms, Diagnosis and When Treatment Is Appropriate
Fatigue and low libido can be associated with testosterone deficiency — but symptoms alone are not a diagnosis. Here's what a proper assessment actually involves.
Dr. Alejandro Molina
Consultant Urologist & Andrologist
15+ years in Urology · FEBU · Penile Girth Enhancement since 2018
Symptoms are a starting point, not an answer
Low energy, reduced libido and sexual symptoms can be associated with testosterone deficiency, but they can also have many other causes — sleep problems, mood, thyroid function, and general metabolic health among them. Not every man with these symptoms needs testosterone.
What a full assessment includes
Diagnosis is made through a combination of symptoms and biochemistry, not either alone. Assessment typically looks at total and free testosterone, SHBG, LH and FSH, prolactin, thyroid function, and broader metabolic health and sleep — since these markers interact with each other.
When treatment may be considered
Testosterone treatment is considered only after appropriate clinical and biochemical assessment, and only when there is a clear indication for it — never as a default response to symptoms, and not for bodybuilding or performance enhancement.
Where treatment is appropriate, ongoing monitoring and safety review are part of the plan, not a one-time decision.
This article is informational and does not replace an individual medical assessment. See our medical disclaimer.