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HelpTest Code TRAB TSH Receptor Antibody (TRAB)
Laboratory Code
LAB574
Specimen Requirements
Specimen Type: Serum
Container/Tube: Red Top
Volume: 6.0 mL blood
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | Not available |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 1 year |
Methodology
Enzyme Immunoassay
Days and Times Performed
Thursday, TAT 2 - 8 days
Specimen Condition
| Gross Haemolysis | Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
Negative: < 1.8 U/L
Borderline: 1.8 – < 2.0 U/L
Positive: ≥ 2.0 U/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Distinguish Graves’ disease from toxic nodular goitre. Monitor anti-thyroid therapy and predict remission.
Service Code
31908
LOINC Code Information
5385-0
Alias
Antibodies to TSH receptor, (TRAb)
Thyrotropin Receptor Antibody
Thyroid-Stimulating Hormone Receptor (TSH Receptor)
Update
Last updated 21/02/2025
Test Classification
This laboratory test has undergone in-house evaluation with appropriate quality assurance and control measures in line with laboratory best practice and accreditation requirements.
Reagent(s) used in this test is/are ordered through HSA's Special Access Route, which provides interim access without full registration