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Bioavailable Testosterone Mapping

Meaning

Bioavailable Testosterone Mapping is a sophisticated clinical assessment that quantifies the fraction of testosterone in the bloodstream that is unbound to Sex Hormone-Binding Globulin (SHBG) and albumin, thus readily available to target tissues. This mapping technique provides a more accurate physiological indicator of androgenic activity compared to measuring total testosterone alone, which includes the large, inactive bound fraction. The comprehensive analysis often involves calculating the free and weakly bound testosterone levels across a diurnal cycle or in response to specific stimuli. Clinicians use this precise data to diagnose subtle androgen deficiencies or excesses, particularly when total testosterone values appear misleadingly normal.