T3 Free, Tracer Dialysis

T3 Free, Tracer Dialysis

Test Code

36598
84480, 84481
36598
84480, 84481
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

T3 Free, Tracer Dialysis - T3 measurements are used to diagnose hyperthyroidism. This test can also be used to clarify thyroid status in the presence of possible protein-binding abnormalities.

Test Resources

Clinical Focus

Thyroid Dysfunction in Nonpregnant Adults

Test Details

Includes

  • Free T3 and T3, Total

Methodology

Equilibrium Dialysis by RIA • Immunochemiluminescence

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)

Free T3

 1-9 Years 282-518 pg/dL 
 10-13 Years 286-556 pg/dL
 14-17 Years 242-501 pg/dL
 Adult 210-440 pg/dL
 Pregnancy (all trimesters) 200-380 pg/dL

T3, Total
<1 Month Not established
1-23 Months 117-239 ng/dL
2-12 Years 105-207 ng/dL
13-20 Years 86-192 ng/dL
>20 Years 76-181 ng/dL

Alternative Name(s)

Triiodothyronine,Free T3

LOINC® Codes, Performing Laboratory

Service Area must be determined
Free T3 and T3, Total

Methodology

Equilibrium Dialysis by RIA • Immunochemiluminescence
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)

Free T3
 1-9 Years 282-518 pg/dL 
 10-13 Years 286-556 pg/dL
 14-17 Years 242-501 pg/dL
 Adult 210-440 pg/dL
 Pregnancy (all trimesters) 200-380 pg/dL

T3, Total
<1 Month Not established
1-23 Months 117-239 ng/dL
2-12 Years 105-207 ng/dL
13-20 Years 86-192 ng/dL
>20 Years 76-181 ng/dL

Alternative Name(s)

Triiodothyronine,Free T3
Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 4 days
  • Refrigerated: 7 days
  • Frozen: 28 days

Reject Criteria

Moderate hemolysis

Setup Schedule

Service Area must be determined
1 mL serum
0.5 mL
Transport tube
Room temperature
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 28 days
Moderate hemolysis
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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