Alert
In This Section

Available Tests

  • Thyroid Function Cascade

Published on November 14, 2016

Thyroid Function Cascade

Includes: TSH, and if indicated - FT4, T3TOT, TPO AB

Tube Type

Test ID LAB5771
EPIC Order
THYROID FUNCTION CASCADE
CPT Code(s)
84443 (additional CPI codes as indicated- see individual tests)
Group/Individual Test Group
Laboratory Core Laboratory
Tube Station Routine: 30, STAT: 888
Specimen Routine: 7 mL blood/serum separator tube/gold top/red top acceptable
Micro:
3.0 mL blood/gold or red top tube (do not send microtainers)
Stability
Unspun: 8 hours
Room Temperature: Yes
Refrigerator: 7 days
Frozen: 4 weeks
Availability Routine: 24 hrs/day
STAT: Yes
Turnaround Time 2 hrs (for first result)
Reference Range Normal: See reference ranges for individual tests
Internal Reference Testing Specimen Handling Instructions: Centrifuge, Aliquot, Refrigerate
Comments
See cascade for tests performed and ranges - Thyroid Function Cascade Flow Chart
The Thyroid Function Cascade is indicated for Non-hospitalized, asymptomatic adults without known or suspected thyroid or pituitary disease.
Thyroid Stimulating Hormone is tested initially. Based on the result, a Free T4 and/or Total T3 and/or Thyroid Peroxidase Antibody will be reflexed.

Reviewed by gloria_crawford on January 31, 2017

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514

Top