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Testosterone, Free (Dialysis) and Total, MS [36170]
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
FTEST
Alias/See Also
36170
CPT Codes
84402, 84403
Includes
Testosterone, Total, MS and Testosterone, Free (Dialysis)
Preferred Specimen
1.8 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.9 mL
Other Acceptable Specimens
1.8 mL plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube (no gel)
Instructions
Centrifuge red-top tube and pipette serum into a plastic pour off tube. Label pour off tube RED TOP SERUM.
Transport Container
Plastic pour off tube
Transport Temperature
Room temperature
Specimen Stability
Room Temperature = 7 days
Refrigerated = 21 days
Frozen = 2 years
Refrigerated = 21 days
Frozen = 2 years
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum Separator Tubes (SST)
Moderate to gross hemolysis. Refer to hemolysis chart.
Gross Lipemia
Moderate to gross hemolysis. Refer to hemolysis chart.
Gross Lipemia
Methodology
Chromatography / Mass Spectrometry; Equilibrium Dialysis; Calculation
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Daily
Report Available
4 days
Reference Range
See Laboratory Report
Clinical Significance
Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism, virilization in females.
Performing Laboratory
Quest Diagnostics Nichols Institute |
14225 Newbrook Drive |
Chantilly, VA 20153 |
Last Updated: March 5, 2024