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: The use of testosterone replacement therapy (TRT) for late-onset hypogonadism (LOH) is increasing every year; however, the literature shows that many men are using testosterone (T) without a clear indication. Previous studies have estimated that up to 25% of men who receive TRT do not have their T tested prior to initiation of the therapy. Given the growing concern and need for proper TRT, clinicians need evidence-based information that informs them on the optimal indication for TRT in LOH patients. The diagnosis of LOH requires the presence of characteristic signs and symptoms, in combination with decreased serum total testosterone (TT). Based on the recent guidelines by the International Society for the Study of Aging Male (ISSAM), the European Association of Urology (EAU), the European Society of Endocrinology (ESE), the European Academy of Andrology (EAA), and the American Association of Urology (AUA), a TT of 250⁻350 ng/dL is the proper threshold value to define low T. The optimal indication for TRT in LOH is the presence of signs and symptoms of hypogonadism, and low T without contraindications for TRT.

The Optimal Indication for Testosterone Replacement Therapy in Late Onset Hypogonadism