Testosterone/epitestosterone ratio - urine

Last updated: Tuesday, 30, March, 2004

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Item Process
Specimen

Random urine.

A special protocol for specimen identification and security is required if the test is being done for sporting body requirements.

Method

Immunoassay.

Reference Interval

<6.

Application

Identification of sport competitors who take testosterone to improve performance.

Interpretation

Testosterone and epitestosterone are both synthesised by the body, so that in urine the ratio of testosterone to epitestosterone is <6.
If a sport competitor takes testosterone as a performance enhancing drug, the ratio is increased above 6.

Reference

International Olympic Committee Medical Commission. Requirements for Accreditation and Good Laboratory Practice. Lausanne 1988.