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Bioavailable Testosterone Analysis

Meaning

Bioavailable Testosterone Analysis is a specific laboratory assay quantifying the fraction of circulating testosterone that is readily accessible to target tissues, comprising both free testosterone and testosterone weakly bound to albumin. This measurement represents the biologically active portion of the hormone, distinct from the total testosterone level which includes the fraction tightly bound to Sex Hormone-Binding Globulin (SHBG). Clinical assessment of this metric offers a more accurate reflection of true androgen status, particularly when SHBG concentrations are abnormal due to age, obesity, or other medical conditions. Understanding this functional metric is essential for precise diagnosis and effective management of androgen deficiency.