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TESTOSTERONE, FREE (INDEX)
Test CodeLAB8022
CPT Codes
84270, 84403
Includes
- Total Testosterone
- Calculated Free Testosterone Index
- Sex Hormone-binding Globulin
Preferred Specimen
1 Gold tube (SST)
Minimum Volume
0.5 mL (1 mL optimal)
Other Acceptable Specimens
1 Green tube (Lithium Heparin)
OR
OR
Instructions
Centrifuge for complete separation of serum or plasma from red cells. Refrigerate until tested.
Transport Container
Transfer tube
Transport Temperature
Refrigerate
Specimen Stability
- 2-8°C up to 3 days
- -20°C up to 1 month
Methodology
EIA by Chemiluminescence (ECLIA)
Setup Schedule
M, T, W, Th, F, Sa, Su
As received; STAT testing not available
As received; STAT testing not available
Reference Range
Sex Hormone Binding Globulin
Male 20-50 years: 13.3 - 89.5 nmol/L
Male >50 years: 16.8 - 125.0 nmol/L
Female 20-46 years: 18.2 - 135.5 nmol/L
Female >46 years: 16.8 - 125.2
Testosterone, Total
Male: 175.0 - 781.0 ng/dL
Female: 10.0 - 75.0 ng/dL
Free Testosterone Index
Male 20-49 years: 35.0 - 92.6
Male >50 years: 24.3 - 72.1
Female 21-49 years: 0.30 - 5.62
Female >50 years: 0.19 - 3.63
Male 20-50 years: 13.3 - 89.5 nmol/L
Male >50 years: 16.8 - 125.0 nmol/L
Female 20-46 years: 18.2 - 135.5 nmol/L
Female >46 years: 16.8 - 125.2
Testosterone, Total
Male: 175.0 - 781.0 ng/dL
Female: 10.0 - 75.0 ng/dL
Free Testosterone Index
Male 20-49 years: 35.0 - 92.6
Male >50 years: 24.3 - 72.1
Female 21-49 years: 0.30 - 5.62
Female >50 years: 0.19 - 3.63
Performing Laboratory
Alverno Central Lab
