TSH Receptor Antibody (TRAb/TBII)

CPT: 83519

Synonyms

TRAb

Expected Turnaround Time

2 - 7 days

Specimen Requirements


Specimen

Serum

Volume

1 mL

Minimum Volume

0.3 mL (Note: This volume does not allow for repeat testing.)

Container

Tiger-top (SST) tube or red-top tube

Collection

Separate serum within one hour; transfer into a plastic transport tube.

Storage Instructions

Ship frozen on dry ice.

Stability Requirements

Temperature Period Room Temperature 24 hours Refrigerated 7 days Frozen 200 days

Test Details


Methodology

Binding inhibition assay

Reference Interval

Antibody Titer <1.0 U/L Negative 1.1 - 1.5 U/L Equivocal >1.5 U/L Positive