Novel reference range values for serum testosterone: a cross-sectional study of 200,000 males

ConclusionsWe found significant variation in serum testosterone according to the presence of metabolic syndrome and time of laboratory draw, but not according to age. These data challenge the prior dogma of age-related hypogonadism and favor an individualized approach towards serum testosterone measurement and interpretation. However, further studies are needed to correlate these population-based data with individuals ’ hypogonadal symptoms.
Source: Journal of Endocrinological Investigation - Category: Endocrinology Source Type: research