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15561: Quantitative Thyroglobulin without Thyroglobulin Antibodies Print View
Thyroglobulin IA  2.8 - 40.9  ng/mL 
Comment      

PRIMARY
1 Serum Separator Tube 2 (1) mL   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)/Frozen - 28 Day(s)  
ALTERNATE

Thyroglobulin (Tg) is a secretory product only of the thyroid gland. The major clinical use of serum Tg measurement is to monitor, but not to diagnose, patients with well-differentiated thyroid cancers. The measurement of thyroglobulin, after thyroidectomy and ablation of the thyroid gland, is useful to determine metastasis. Deficient Tg synthesis is observed in infants with goitrous hypothyroidism. With immunometric assays (sandwich assays), TgAb interference typically produces inappropriately low Tg results, most likely caused by endogenous Tg immune complexes that block one or more of the reagent antibodies from binding endogenous Tg.

Patient Preparation:
Dietary supplements containing biotin may interfere in assays and
may skew analyte 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.
Setup Schedule
Sunday-Saturday

Reported (Analytical Time)
Next day

CPT Code
84432

The CPT codes provided are based on AMA guidelines 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.

Notes
Transport Temperature: Room temperature






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