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TRAb (TSH Receptor Binding Antibody):

Fasting Required: No
Lab: Quest Diagnostics
Specimen: Blood
Results: Average processing time 4-7 days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.

Description: Hyperthyroidism in Graves' disease is caused by autoantibodies to the TSH receptor (TSHR), and measurement of these TSHR antibodies can be useful in disease diagnosis and management. The majority of TSH receptor antibodies imitate the action of TSH.

Alternative Name(s): TBII; Thyroid Stimulating Hormone (TSH) Receptor Antibody; Thyrotropin Receptor Antibody; TSH Receptor Blocking Antibody; Thyrotropin-Binding Inhibitory Immunoglobulin