Diagnosis of hyperthyroidism; diagnosis of patients with normal routine thyroid tests but in whom progessive exophthalemia and/or Grave's disease is still suspected.
Thyroid Stimulating Immunoglobulin is measured by the Siemens Immulite 2000 Chemiluminescent Immunoassay method. The cutoff value of 0.55 IU/L was determined from a ROC curve analysis and has consistently shown a sensitivity of >98% and specificity of >99% for the diagnosis of Graves’ Disease.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Days Test Performed
2 - 7 days
Soft Order Code
Thyroid Stimulating Immunoglobulin
Update Type: New Tests
Updated Date: 09/13/2019
LATS (Long Acting Thyroid Stimulator)
Long Acting Thyroid Stimulator (LATS)
THYROID STIMULATION IG
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Offsite Collection Instructions
Collect blood in an SST tube. Centrifuge, aliquot serum into plastic vial and refrigerate up to 7 days or freeze for longer storage.
0.5 mL serum
0.3 mL serum