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Testosterone, Free (Dialysis), Total (MS) and Sex Hormone Binding Globulin : 37073
Test CodeBIOFTS or 37073
CPT Codes
84270, 84402, 84403
Transport Container
3 mL Serum collected in a Red-top tube (no gel) or Serum Separator Tube (SST) in a standard transport tube.
Transport Temperature
Room temperature.
Specimen Stability
Room temperature: 7 days; Refrigerated: 7 days; Frozen: 28 days
Methodology
Mass Spectrometry, Equilibrium Dialysis, Calculation, Immunoassay
Setup Schedule
Sunday - Saturday
Report Available
4 days
Reference Range
See Laboratory Report.
Clinical Significance
Testosterone circulates almost entirely bound to transport proteins: normally less than 1% is free. Measurement of Free Testosterone may be useful when disturbances in Sex Hormone Binding Globulin (SHBG) are suspected such as when patients are obese or have excessive estrogen. Testosterone measurements are used to assess erectile dysfunction, infertility, gynecomastia, and osteoporosis and to assess hormone replacement therapy.
Performing Laboratory
med fusion