Testosterone, Free (Dialysis) and Total, MS
Test Summary
Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism, virilization in females.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1.8 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.9 mL
Instructions
Centrifuge red-top tube and pipette serum into a plastic pour off tube. Label pour off tube RED TOP SERUM.
Patient Preparation
N/A
Storage
Plastic pour off tube
Transport Temperature
Room temperature
Specimen Stability
- Room Temperature = 7 days
- Refrigerated = 21 days
- Frozen = 2 years
Limitations
N/A
Other Acceptable Specimens
1.8 mL plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube (no gel)
Unacceptable Specimens
Serum Separator Tubes (SST)
Moderate to gross hemolysis. Refer to hemolysis chart.
Gross Lipemia
Moderate to gross hemolysis. Refer to hemolysis chart.
Gross Lipemia
Order Code
FTEST
EPIC (Premier) Code
LAB380
Includes
Testosterone, Total, MS and Testosterone, Free (Dialysis)
CPT Code
- 84402
- 84403
Billing Code
- 700000
CPT Statement
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. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Reference Range
See Laboratory Report
Setup Schedule / Expected Turnaround Time
Daily; Report available: 4 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1.8 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.9 mL
Instructions
Centrifuge red-top tube and pipette serum into a plastic pour off tube. Label pour off tube RED TOP SERUM.
Patient Preparation
N/A
Storage
Plastic pour off tube
Transport Temperature
Room temperature
Specimen Stability
- Room Temperature = 7 days
- Refrigerated = 21 days
- Frozen = 2 years
Limitations
N/A
Other Acceptable Specimens
1.8 mL plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube (no gel)
Unacceptable Specimens
Serum Separator Tubes (SST)
Moderate to gross hemolysis. Refer to hemolysis chart.
Gross Lipemia
Moderate to gross hemolysis. Refer to hemolysis chart.
Gross Lipemia
Result Information
Methodology
Chromatography / Mass Spectrometry; Equilibrium Dialysis; Calculation
Testing Laboratory
N/A
Reference Range
See Laboratory Report
Setup Schedule / Expected Turnaround Time
Daily; Report available: 4 days