Thyrotropin Receptor Autoantibodies

Test Code: TD_4931

CPT Code(s): 83520

$69

Test Details

Alternative Name(s)

TSH receptor autoantibody
Trab
Thyroid Stim Hormone Receptor AB

Test Includes

Trab

Methodology

Electrochemiluminescent immunoassay (ECLIA)

Rejection Criteria

Hemolysis
Lipemia
Heat-inactivated samples
Heparin plasma <Repeated freeze/thaw cycles

Reference Range(s)

<1.75 IU/L

Specimen Requirements

Preferred Specimen

Serum separator tube (SST)

Minimum Volume

1 mL serum

Sample Stability

1 day room temperature
6 days refrigerated
1 month frozen

Transport Temperature

Frozen

Collection Instructions

Allow SST to clot in an upright position for
at least 30 minutes, then centrifuge sample within 2 hours
of collection. Transfer serum to a plastic transport tube.
Clearly label tube as serum. Freeze. When multiple tests
are ordered, submit separate tube for this test.
Note: Do not collect samples from patients on heparin
therapy. Samples should not be taken from patients
receiving therapy with high biotin doses (>5 mg/day) until
at least 8 hours following the last biotin administration.

Alternative Specimen

1 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Freeze. when multiple tests are ordered, submit separate tube for this test.