- TSIM
Thyroid Stimulating Immunoglobulin
Specimen:
Test Code
TSIM
Specimen Name
Thyroid Stimulating Immunoglobulin
Collect
SST-Serum Also Acceptable: Green (Lithium Heparin plasma), or Lavender (EDTA plasma).
Submit
1 mL (Min: 0.5 mL) Serum or plasma. Preferred frozen, Refrigerated acceptable
Special Handling
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Preferred transport: Transfer serum to a standard transport tube and freeze.
Rejection Criteria
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Stability
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 year
Methodology
Semi-Quantitative Chemiluminescent Immunoassay (CLIA)
Performed
Performed Sunday through Saturday
Reported
1-2 days
CPT Codes
- 84445
Components
—
Additional Information
Acceptable secondary test for autoimmune thyroid disease.
Disclaimer:
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Test Information
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Common Lab Definitions
- Serum
- Plasma
- STT