Current guidelines for the diagnosis of testosterone deficiency

Area of Science:

• Endocrinology
• Men's Health

Background:

• Male hypogonadism is a complex syndrome characterized by testosterone deficiency.
• Symptoms vary based on age of onset, severity, and duration.
• Concomitant diseases like metabolic syndrome and type 2 diabetes are often associated with hypogonadism.

Purpose of the Study:

• To outline the diagnostic criteria for male hypogonadism.
• To describe the diverse symptoms and consequences of testosterone deficiency.
• To highlight the importance of biochemical assessment in diagnosis.

Main Methods:

• Clinical history and physical examination.
• Biochemical assessment of serum total testosterone levels.
• Evaluation of free or bioavailable testosterone in ambiguous cases.

Main Results:

• Total testosterone levels below 8 nmol/l strongly suggest hypogonadism.
• Levels above 12 nmol/l are generally considered normal.
• A testosterone level range of 8-12 nmol/l requires further investigation.

Conclusions:

• Diagnosis of hypogonadism integrates clinical findings with testosterone level measurements.
• Testosterone deficiency can manifest in various ways, impacting physical and psychological health.
• Further assessment, including free testosterone, is crucial for borderline testosterone levels.