The number of requests for testosterone testing in adult males has been increasing in recent years. In this review, the biochemistry and physiology of testosterone in males relevant to the chemical pathologist or clinical biochemist is outlined. The methodology for total testosterone and various laboratory tests associated with the assessment of testosterone status including free testosterone, ...

We have read with immense interest the recent article byWehr et al. (1) showing that low free testosterone concentrations in postmenopausal diabetic women are associated with increased allcause and cardiovascular mortality. We wish to comment on the concentrations of total and free testosterone of the study subjects. The overall mean or median total and free testosterone concentrations were not...

OBJECTIVE To evaluate the association between androstenedione, testosterone, and free testosterone and metabolic disturbances in polycystic ovary syndrome. METHODS We analyzed the association between androstenedione, testosterone, and free testosterone and metabolic parameters in a cross-sectional study including 706 polycystic ovary syndrome and 140 BMI-matched healthy women. Polycystic ovar...

Background: Obesity and insulin resistance refer to a clustering of various medical conditions, with a number of pathological components that contribute to the development of diabetes and cardiovascular disease. Some studies have shown that free testosterone levels are low in obese men and are inversely correlated with the degree of obesity. In addition, leptin levels increases with obesity tha...

results serum estradiol levels tended to have a negative correlation with homeostasis model assessment of insulin resistance (homa-ir) in premenopausal women but not in postmenopausal women. on the other hand, free testosterone levels tended to have a positive correlation with homa-ir in postmenopausal women but not in premenopausal women. serum shbg levels showed significant negative correlati...

OBJECTIVE It has been suggested that the high prevalence of subnormal free testosterone concentrations, along with low or inappropriately normal gonadotropins in men with type 2 diabetes, may be the result of an increase in plasma estradiol concentrations secondary to an increase in aromatase activity in the adipose tissue that leads to the suppression of the hypothalamo-hypophyseal-gonadal axi...

objectives: this study designed to detect the prevalence of ovarian and/or adrenal hyperandrogenism in women with polycystic ovary syndrome (pcos).materials: one hundred pcos women included in this cross sectional study after informed consent and approval of the study by local institute ethical committee. diagnosis of pcos based on the rotterdam eshre criteria. studied women underwent complete ...

background: preeclampsia along with its complications seems to be one of the major causes of maternal morbidity and mortality. despite numerous studies, the pathology of preeclampsia has not yet been fully elucidated. this study, therefore, determines whether maternal serum levels of androgen and progesterone are higher in patients with preeclampsia than in matched control subjects.   methods: ...

Imposex, the development of male sex characteristics by female gonochoristic snails, has been documented globally and is causally associated with exposure to the ubiquitous environmental contaminant tributyltin (TBT). Elevated testosterone levels in snails also are associated with TBT, and direct exposure to testosterone has been shown to cause imposex. We discovered previously that the mud sna...

Introduction: The purpose of this study was to determine the frequency of androgen decline in the aging male (ADAM) in a group of Indian men working in the health sector. Materials and Methods: A free medical health checkup camp was organized for the male workers aged between 40 and 60 years employed in surgical departments of our hospital. Of 180 listed male workers, 170 attended this camp and...