Testosterone^^adjusted for sex hormone binding globulin
Quantifies biologically active testosterone by adjusting for binding proteins.
Why This Biomarker Matters
This measure is more accurate than total testosterone for assessing hormone availability. It helps diagnose hormone imbalances affecting energy, mood, sexual function, and body composition.
Overview
This test measures free and weakly bound testosterone adjusted for sex hormone binding globulin (SHBG) levels, providing a more accurate picture of biologically active testosterone than total testosterone alone. SHBG binds testosterone in the blood, reducing its availability to tissues. By accounting for SHBG, this calculation better reflects the testosterone your body can actually use. This is particularly useful for evaluating symptoms of hormone imbalance in both men and women, including fatigue, mood changes, sexual function, and muscle mass.
Technical Information (LOINC Codes)
Standardized laboratory codes for this biomarker
21555-8PrimaryAvailable Lab Tests
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