Variability in total testosterone levels in ageing men with symptoms of androgen deficiency

Carolyn Allan, Boyd Strauss, Elise Forbes, Eldho Paul, Robert I McLachlan

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3 Citations (Scopus)


The aim of this study was to determine the variability in total testosterone (TT) levels in healthy, non-obese ageing men with symptoms of androgen deficiency. Men aged >/=55 years were recruited from the community. Morning TT levels were measured on four occasions in a 12-month period. In all, 96 men aged 62.7 +/- 6.8 years were studied. Geometric mean values (95 confidence interval) of TT levels for the cohort at each time point were 14.5 (13.4-15.7), 14.6 (13.5-15.8), 15.5 (14.4-16.8) and 15.0 (13.9-16.2) nmol/L. The maximum intra-individual difference in TT between the four samples was 4.1 nmol/L (interquartile range: 2.9-6.4). Using the average of two baseline TT values reduces the maximum difference to 2.3 nmol/L (1.0-3.8). Only 1 of 25 men with a documented TT
Original languageEnglish
Pages (from-to)212-216
Number of pages4
JournalInternational Journal of Andrology
Issue number3
Publication statusPublished - 2011

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