Test ID: QG160
CPT code: 84270, 84403, 82040
LOINC:
Specimen Type: Red or SST
Frequency: Within 1 day
Instructions: 1.5 mL Serum from Red or SST, Ambient. Min 1 mL.
Text: Free testosterone assessment is recommended as a primary or secondary measure of androgen activity in men and women. Determination of free testosterone can be of value in men with borderline total testosterone because alterations in SHBG levels can markedly affect the concentration of biologically available free testosterone.
Methodology: Albumin: Colorimetric Testosterone:Electrochemiluminescence immunoassay (ECLIA) SHBG: Electrochemiluminescence immunoassay (ECLIA)