Test Name: TESTOSTERONE, FREE (DIALYSIS) AND TOTAL (LC/MS/MS)
Test Code: 2196311
Alias: LAB2270
Testosterone F/T
CPT Code(s): 84402   84403  
Test Includes:

Testosterone, Total, MS and Testosterone, Free (Dialysis)
Preferred Specimen:

1.8 mL serum collected in a red-top tube or SST
Container: Plain Red (no additive/gel) or SST
Alternate Container:

Plasma collected in a sodium heparin green top or lithium heparin green top tube

SST also acceptable
Minimum Volume:

0.9 mL
Collection Instructions:

Red-top tube (no gel): Allow blood to clot at room temperature. Centrifuge to separate the serum from the cells and immediately pour serum into a plastic transport tube.

Serum separator tube: Allow blood to clot at room temperature, centrifuge, and remove serum from the gel immediately (not to exceed 48 hours) by pouring serum into a plastic transport tube.
Transport Temperature:

Room temperature
Stability:

Room temperature:  7 days
Refrigerated:  21 days
Frozen:  2 years
Rejection Criteria:

Gross hemolysis • Grossly lipemic

Limitations: 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.
Additional Information:

Schedule:

Set up: Daily; Report Available: 4-5 days
Method:

Chromatography/Mass Spectrometry • Equilibrium Dialysis • Calculation (CALC)
Performing Lab:

Quest Diagnostics, Chantilly; #36170
Clinical Significance:

Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism, virilization in females.
Use:
Updated: 8/19/24

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The CPT codes included in this publication are in accordance with Current Procedural Terminology, a publication of the American Medical Association. CPT codes are provided here for the convenience of our clients; however, correct coding often varies from one carrier to another, and HealthLab may bill specific carriers using codes other than those shown. Clients who bill for services should verify the code(s) with the applicable payor to confirm that their use is appropriate in each case.
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