Test Overview

Test Methodology

Chemiluminescence Immunoassay (immunoenzymatic)

Test Usage

Aid in detection and confirmation of autoimmune thyroiditis and to distinguish from other causes of goiter, such as Hashimoto's thyroiditis and juvenile lymphocytic thyroiditis. A negative test for thyroid peroxidase antibodies (ATPO) and thyroglobulin antibodies essentially rules out a diagnosis of Hashimoto's thyroiditis.

Reference Range*

0 - 3 IU/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Patients with other autoimmune disorders such as Sjogren's syndrome, SLE, RA, or autoimmune hemolytic anemia may be positive for thyroid antibodies. Patients with myxedema, granulomatous thyroiditis, nontoxic nodular goiter and thyroid carcinoma may occasionally produce thyroid antibodies.

Test Details

Days Test Performed

Monday, Thursday

Analytic Time

8 hours

Soft Order Code

ATG

MiChart Code

Thyroglobulin Antibody

Synonyms

Synonyms

THYROID THYROGLOBULIN AB
Thyroid Antibody
THY
Antithyroglobulin Antibody
THYRGLB AB
Thyroglobulin Antibody
ATG
THYROID ANTIBODIES

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Laboratory

Chemical Pathology

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Specimen Requirements

Offsite Collection Instructions

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. Store refrigerated up to 48 hours. Longer storage requires freezing at -20 degrees C.

Container

Yellow Top Tube

Normal Volume

0.5 mL serum

Minimum Volume

0.2 mL serum

Billing Information

Fee Codes


CPT Code

86800

LOINC

56536-6

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