These include the testosterone/epitestosterone ratio (normally less than 6), the testosterone/luteinizing hormone ratio and the carbon-13/carbon-12 ratio (pharmaceutical testosterone contains less carbon-13 than endogenous testosterone).
Estes inclúen a cuantificación da proporción testosterona/epitestosterona (normalmente menor de 6), a proporción testosterona/hormona luteinizante e a proporción carbono-13/carbono-12 (a testosterona farmacéutica contén menos carbono-13 ca a testosterona endóxena).