Quantitative Thyroglobulin without Thyroglobulin Antibodies

Overview

  • EPIC Code:
  • LAB533 & LAB2512
  • Soft Test Code:
  • Send Out Test Code:
  • 15561
Alternate Names
  • Quant Thyroglobulin w/o Thyroglob Ab
  • Quantitative Thyroglobulin without Thyroglobulin Anitbodies
  • Serum Thyroglobulin
  • Tg
  • Thyroglobulin
  • Thyroglobulin Level
  • Thyroglobulin Quantitative
  • Thyroglobulin Serum
  • Thyroglobulin, Total

Specimen Collection & Preparation

Test Notes

Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.

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.


Patient Preparation

For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.


Specimen Requirements:

-OR-

1.0 mL Serum in a SST Gold Top Tube
Minimum Volume:
0.5 mL Serum*

* This volume does not allow for repeat testing

Transport and Storage:
  • Ambient (18-24°C): 7 Days

    Transport 

  • Refrigerated (2-8°C): 7 Days
  • Frozen (-20° C or colder): 28 Days

Clinical Interpretation

Reference Range:

Intact Thyroid: 2.8 - 40.9 ng/mL
Athrotic: < 0.1 ng/mL

Note: Abnormal flagging is based upon the reference interval for patients with intact thyroid


Test Comments:

Samples containing Thyroglobulin Antibodies could interfere in the determination of Thyroglobulin. Please interpret results with caution.


Methodology:
  • Immunoassay (IA)

Production Schedule

Sites Performed
  • Quest - Chantilly
Days Performed
Tuesday
Wednesday
Thursday
Friday
Saturday
Departments
  • Sendouts - Clinical
Turn Around Time

1 to 2 days


Coding & Compliance

CDM

00918953


CPT Coding

84432