OriginalValoración de niveles de testosterona mediante diferentes métodos analíticos en varones sanosEvaluation of testosterone levels through distinct analytic methods in healthy men

Plasma testosterone concentrations are essential for the diagnosis of several causes of hypogonadism, including late-onset hypogonadism. Defining the normal range for testosterone concentrations poses certain difficulties due to the changes that occur with age and the variability of the different analytical methods used.