Reference ranges for urinary levels of testosterone and epitestosterone, which may reveal gonadal function, in a Korean male population

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Reference ranges for urinary levels of testosterone and epitestosterone, which may reveal gonadal function, in a Korean male population

Cannabis, or marijuana, the most commonly used illicit drug in the world, has been shown to be responsible for suppressing the production and secretion of androgens, particularly testosterone. However, despite such findings in animals, the chronic effects of marijuana use on human endocrine systems have proved to be inconsistent. Here, we investigated the reference ranges of urinary levels of t...

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A Description of Reference Ranges for Organic Acids in Urine Samples from A Pediatric Population in Iran

Background: Organic acids refer to a family of compounds that are intermediates in a variety of metabolic pathways. Many organic acids are present in urine from clinically normal individuals. Elevated levels of urine organic acids cause to the organic acidurias, disorders in which some metabolic pathways in organic acid metabolism are blocked. The present work identified major and minor urinary...

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Testosterone Trajectories and Reference Ranges in a Large Longitudinal Sample of Male Adolescents

PURPOSE Pubertal dynamics plays an important role in physical and psychological development of children and adolescents. We aim to provide reference ranges of plasma testosterone in a large longitudinal sample. Furthermore, we describe a measure of testosterone trajectories during adolescence that can be used in future investigations of development. METHODS We carried out longitudinal measure...

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Reference Ranges and Determinant Factors for Exhaled Nitric Oxide in a Healthy Korean Elderly Population

PURPOSE Exhaled nitric oxide (NO) is a useful non-invasive biomarker for asthma diagnosis; however, the literature suggests that exhaled NO levels may be affected by demographic factors. The present analysis investigated determinant factors that present exhaled NO reference levels for Korean elderly adults. METHODS For reference levels, we analyzed the baseline data of healthy adult participa...

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Detection of anabolic steroid administration: ratio of urinary testosterone to epitestosterone vs the ratio of urinary testosterone to luteinizing hormone.

Our goal in this study was to determine whether the urinary ratio of testosterone to luteinizing hormone (T/LH) as an indicator of exogenous anabolic steroid (AS) use is superior to the urinary ratio of testosterone to epitestosterone (T/E). After 2 weekly placebo injections, 19 subjects were given testosterone cypionate (TC) injections of 250 or 500 mg/week for 14 weeks followed by 14 weekly p...

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ژورنال

عنوان ژورنال: The Journal of Steroid Biochemistry and Molecular Biology

سال: 2014

ISSN: 0960-0760

DOI: 10.1016/j.jsbmb.2013.12.001