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Testosterone: Functions and Regulation

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Updated: Jul 9, 2026

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies

Published on: January 10, 2025

[Some problems with testosterone determination].

Barbara Mroczko¹, Marek Medraś

¹Zakład Diagnostyki Biochemicznej Akademii Medycznej, Białystok.

Endokrynologia Polska

|December 7, 2007

Summary

This summary is machine-generated.

Serum testosterone levels may not reflect clinical status due to limitations in measuring total testosterone. This review explores the utility of measuring testosterone and its bioactive forms.

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Last Updated: Jul 9, 2026

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies

Published on: January 10, 2025

Area of Science:

Endocrinology
Andrology
Hormone Assays

Context:

Testosterone is the primary male sex hormone, crucial for assessing androgen status.
Current common assays measure total testosterone, which may not correlate with clinical symptoms.
Biologically active testosterone forms are essential for accurate clinical assessment.

Purpose:

To review the clinical utility of measuring total testosterone.
To highlight the importance of determining bioactive testosterone levels.
To discuss factors influencing testosterone levels.

Summary:

Serum testosterone assays often measure total testosterone, potentially limiting clinical correlation.
Assays need to account for biologically active testosterone fractions for better patient assessment.
Understanding factors affecting hormone levels is key for accurate androgen status evaluation.

Impact:

Improves understanding of testosterone's role in male health.
Guides the development of more accurate diagnostic methods for androgen deficiency.
Enhances clinical interpretation of hormone level results for patient care.