Testosterone, Free, Bioavailable and Total, MS

Test Code

TSTFB

Alias/See Also

LAB9400

CPT Codes
<p>82040, 84270, 84403</p>

Includes

Testosterone, Total, MS
Testosterone, Free
Testosterone, Bioavailable
Sex Hormone Binding Globulin (SHBG)
Albumin

Preferred Specimen

Specimen Type: Serum red

Collection Container/Type: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 2.8 mL

Patient Preparation
Administration of STRENSIQ may interfere in certain assays and may falsely elevate values. For patients receiving STRENSIQ, consideration should be given to using alternate methods.

Minimum Volume

1.3 mL

Instructions

Specify age and sex on test request form.

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 Container

Plastic transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days

Refrigerated: 7 days

Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Grossly lipemic • Serum separator tube (SST)

Methodology

Chromatography/Mass Spectrometry • Calculation (CALC) • Spectrophotometry (SP) • Immunochemiluminescent Assay

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 FDA. 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

Report Available

2 days

Reference Range

See Laboratory Report

Clinical Significance

Helpful in assessing testicular function in males and managing hirsutism, virilization in females.

Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153

Last Updated: February 17, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.