Testosterone, Free (Dialysis) and Total, MS

Testosterone, Free (Dialysis) and Total, MS

Test Code

36170
84402, 84403
36170
84402, 84403
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Testosterone, Free (Dialysis) and Total, MS - Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism, virilization in females.

Test Resources

Test FAQ

Hypogonadism

Test FAQ

Testosterone Testing

Algorithm

Adult Male Hypogonadism Diagnostic Algorithm

Algorithm

Laboratory Testing in the Differential Diagnosis of Polycystic Ovary Syndrome (PCOS) and Nonclassic Congenital Adrenal Hyperplasia (CAH)

Algorithm

Polycystic Ovary Syndrome (PCOS) Diagnostic Algorithm

Clinical Focus

Hypogonadism and Low Testosterone in Men: Laboratory Support of Diagnosis and Management

Clinical Focus

Polycystic Ovary Syndrome (PCOS)

Test Details

Includes

  • Testosterone, Total, MS and Testosterone, Free (Dialysis)

Methodology

Chromatography/Mass Spectrometry • Equilibrium Dialysis • Calculation (CALC)

Assay Category

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.

Reference Range(s)

See Laboratory Report

Alternative Name(s)

F Testo,Free & Total Testosterone, LC/MS/MS,Testosterone Index,Testosterone,Total/Free, Pediatric,Dialyzable Testosterone,Fractionated Testosterone,Free and Unbound Testosterone

LOINC® Codes, Performing Laboratory

Service Area must be determined
Testosterone, Total, MS and Testosterone, Free (Dialysis)

Methodology

Chromatography/Mass Spectrometry • Equilibrium Dialysis • Calculation (CALC)
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.

Reference Range(s)

See Laboratory Report

Alternative Name(s)

F Testo,Free & Total Testosterone, LC/MS/MS,Testosterone Index,Testosterone,Total/Free, Pediatric,Dialyzable Testosterone,Fractionated Testosterone,Free and Unbound Testosterone
Service Area must be determined

Preferred Specimen(s)

1.8 mL serum

Alternative Specimen(s)

Plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube

Minimum Volume

0.9 mL

Collection 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

Transport tube

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 7 days
  • Refrigerated: 21 days
  • Frozen: 2 years

Reject Criteria

Gross hemolysis • Grossly lipemic

Setup Schedule

Service Area must be determined
1.8 mL serum
Plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube
0.9 mL
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 tube
Room temperature
Room temperature: 7 days
Refrigerated: 21 days
Frozen: 2 years
Gross hemolysis • Grossly lipemic
Service Area must be determined
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection may be available in your area for purchase through Quest Mobile.
Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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