Salivary testosterone levels in preadolescent children

Daniela Ostatníková¹, Karol Pastor, Zdenek Putz

¹Institute of Physiology, School of Medicine, Comenius University, Bratislava, Slovak Republic. ostatnikova@fmed.uniba.sk

|June 12, 2002

Summary

Salivary testosterone levels remain stable in preadolescent children, with boys showing significantly higher levels than girls. This study confirms sexual dimorphism in testosterone, offering insights into its reliable measurement via saliva.

Area of Science:

Endocrinology
Pediatric Health
Biomarker Analysis

Background:

Saliva accurately reflects biologically active free testosterone, correlating well with serum levels.
Salivary testosterone offers a reliable, non-invasive method for assessing free testosterone.
Understanding testosterone dynamics in children is crucial for growth and development monitoring.

Purpose of the Study:

To investigate salivary testosterone levels and their changes in preadolescent children.
To examine potential sexual dimorphism in salivary testosterone concentrations.
To establish reference ranges for salivary testosterone in this age group.

Main Methods:

Radioimmunoassay (RIA) was used to determine salivary testosterone levels.
203 healthy preadolescent children (77 girls, 126 boys) provided saliva samples.
Annual sampling considered circadian and seasonal testosterone fluctuations; data analyzed statistically.

Main Results:

Mean salivary testosterone concentrations were 0.038 +/- 0.012 nmol/L for girls and 0.046 +/- 0.026 nmol/L for boys.
No significant changes in salivary testosterone were observed during the preadolescent period, except for minor fluctuations in girls at ages 7 and 9.
Significantly higher salivary testosterone levels were found in boys compared to girls (p = 0.009).

Conclusions:

Salivary testosterone levels are generally stable in pre-pubertal children aged 6-9 years.
Sexual dimorphism in salivary testosterone is evident, with boys exhibiting higher levels.
Saliva provides a reliable indicator of testosterone status in preadolescent children.

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Related Experiment Videos

Salivary testosterone levels in preadolescent children

Area of Science:

Background:

Purpose of the Study:

Main Methods:

Main Results:

Conclusions:

Related Concept Videos

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