… Given the current gap in knowledge of the genetic factors that contribute to the inter-individual
variability in serum testosterone concentration in men we conducted a meta-analysis of …

… Free or bioavailable testosterone may be calculated or measured. The free androgen index
… status in men. In the interpretation of serum testosterone concentrations with results >40 nmol…

… Seasonal changes in testosterone: Mean serum testosterone concentrations in subgroups
of men (total N = 4,462) tested in different months across a 16-month period. Error bars show …

… of sexuality and serum testosterone concentration through examination of these variables
in a large homogeneous group of men. Serum testosterone concentration was determined in …

… hypogonadism and serum T … serum T levels, in contrast, provides an objective measure of
the gonadal status that can support or refute clinical signs and symptoms. Nevertheless, serum …

… a population-level decline in serum T concentrations would be consistent with evidence of
… in serum total testosterone and calculated bioavailable T (BT) concentrations obtained from …

… In this study, they found that testosterone levels in older men remain stable throughout the
morning and early afternoon, and declined only moderately after that. Further case control …

… TRT in older men with low testosterone concentrations has been associated with improved
libido, sexual function, mood, and possibly muscle strength (12, 17). Improvement in bone …

… Interindividual variation in the levels of testosterone and other hormones in men has received
considerable attention. Intraindividual variation has also been examined, 9–17 but sample …

… were measured in 524 healthy men and in 331 consecutive Japanese men with type 2 …
between serum free testosterone concentration and luteinizing hormone (LH) concentration as …