TRAb (TSH Receptor Binding Antibody)
Test Summary
Measurement of TRAb is used to diagnose and manage Graves' disease, neonatal hypothyroidism, and postpartum thyroid dysfunction. TRAb, which measures the ability of antibodies to inhibit TSH binding to its receptor, reflects the presence of either or both the stimulatory and inhibitory immunoglobulin classes.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL random serum
Minimum Volume
0.5 mL
Instructions
Allow serum to clot at room temperature. Serum must be separated from the cells or gel barrier within 1 hour of collection and poured into a transport vial.
Patient Preparation
N/A
Storage
Transport vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 7 days
- Refrigerated: 14 days
- Frozen: 21 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Serum received in a gel barrier tube or on the cells
Order Code
TRAB
EPIC (Premier) Code
LAB1435
Includes
N/A
CPT Code
- 83520
Billing Code
- 700000
CPT Statement
Methodology
Enzyme Linked Immunosorbent Assay (ELISA)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Reference Range
≤2.00 IU/L
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 3 - 5 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL random serum
Minimum Volume
0.5 mL
Instructions
Allow serum to clot at room temperature. Serum must be separated from the cells or gel barrier within 1 hour of collection and poured into a transport vial.
Patient Preparation
N/A
Storage
Transport vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 7 days
- Refrigerated: 14 days
- Frozen: 21 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Serum received in a gel barrier tube or on the cells
Result Information
Methodology
Enzyme Linked Immunosorbent Assay (ELISA)
Testing Laboratory
N/A
Reference Range
≤2.00 IU/L
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 3 - 5 days