What role does Testosteron Test play in Sport?

Testosterone testing in sports is primarily used to monitor hormonal status, detect doping (elevated levels), or diagnose deficiency (e.g., overtraining). Blood-based measurements (total and free testosterone) are the gold standard. Direct DNA tests for testosterone-related genes (e.g., AR, SHBG) provide only weak, mechanistic hints and no clinical diagnosis. Evidence for genetic predispositions is low; lifestyle, training, and diet dominate. Caution: Without medical indication, self-tests can lead to misinterpretation. A high testosterone level is not automatically performance-enhancing – doping risks and health side effects must be considered. In summary: blood tests are useful for specific symptoms; DNA tests have little validated value in sports.