Days Set Up
Monday - Friday
Analytic Time

1 - 4 days

MiChart Code
Thyrotropin Receptor Antibody
Soft Order Code
THYRO

Test Updated:

Synonyms

Thyrotropin Binding Inhibitory Immunoglobulin
Thyroid Stimulating Immunoglobulin
Thyroid Stimulating Hormone Receptor Antibody
TSH Binding Inhibition Index
Thyrotropin-Binding Inhibition Index
TSH Receptor Antibody
THYROTR
Thyrotropin Receptor Ab

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All specimens should be accompanied by a requisition.

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Test FAQ

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Test Overview

Test Methodology

Electrochemiluminescence Immunoassay (ECLIA)

Test Usage

Used in diagnosis of hyperthyroidism and Graves' disease.

Reference Range

< or = 1.75 IU/L. At a decision limit of 1.75 IU/L, this assay has 97% sensitivity and 99% specificity for detection of Graves' disease. In healthy individuals and in patients with thyroid disease without diagnosis of Graves' disease, the upper limit of anti-TSHR values are 1.22 IU/L and 1.58 IU/L, respectively (97.5th percentiles).

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

Specimen Requirements

Collection Onsite

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. This test should not be requested in patients who have recently received radioisotopes, therapeutically or diagnostically, because of potential assay interference.

Collection Offsite

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. This test should not be requested in patients who have recently received radioisotopes, therapeutically or diagnostically, because of potential assay interference.

Yellow Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.8 mL serum

Billing Information

CPT Code
83520
Pro Fee Code
 
LOINC
5385-0

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.