ARUP's Laboratory Test Directory

0070144: Thyroid Stimulating Hormone Receptor Antibody (TRAb)

Test Mnemonic: TRAB
Methodology: Radioimmunoassay

Performed: Mon, Thu, Sat

Reported: 1-3 days

Specimen Required:  
Collect: One 4 mL SST.

Transport: 1 mL serum, frozen. (Min: 0.15 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.15 mL serum, frozen.

Unacceptable Conditions: Plasma.

Stability: Stability: After separation from cells: Ambient: 24 hours; Refrigerated: 3 days; Frozen: 3 months

Reference Interval:
Negative - 9% or less 
Indeterminate - 10-15%
Positive - 16% or greater

Interpretive Data:
TSH Receptor Antibodies are measured in this assay by the thyrotropin binding inhibiting immunoglobulin technique (TBII). Results are reported as percent inhibition of TSH binding.

Positive results are consistent with autoimmune thyroid disease.



CPT Code(s):
83519