Thyroglobulin by Immunoassay


Sunquest Code:TG  
Epic Code:LAB8134Epic Name:Thyroglobulin by Immunoassay
Synonyms:Thyroid
Methodology:Chemiluminescent immunoassay
Turnaround Time:Performed Mon-Fri; results are reported the same day.


Collection Instructions

Specimen:Blood
Optimal Volume:0.8 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel) (Green (lithium heparin, no gel), Green (lithium heparin, gel), Green (sodium heparin, no gel), Red (no gel))
Causes for Rejection:Grossly hemolyzed or lipemic specimens
Contraindications:Large doses of biotin (10 mg or more per day) may cause falsely decreased thyroglobulin levels as measured by the Immulite 2000 XPi. If interference is suspected, it is strongly recommeded that biotin is discontinued for at least one week prior to retesting.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 0.3 mL; 0.2 mL minimum. Store refrigerated.
Shipping Instructions:Ship at refrigerated temperature.
Stability:7 days at room temperature or refrigerated; 2 months frozen.
Test Performed at or Referral Lab Endocrine  (UMMC-East Bank)


Interpretive

Reference Range:Less than 55.0 ng/mL.
Use:Follow-up of patients with differentiated thyroid cancers after thyroidectomy and radioactive iodine ablation.


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