Not routinely ordered. Preferred testing for autoimmune thyroid disease.
Quantitative Bioassay/Quantitative Chemiluminescent Immunoassay
This test is New York DOH approved.
- Patient Preparation
- Plain red or serum separator tube.
- Specimen Preparation
- Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.7 mL)
- Storage/Transport Temperature
- Unacceptable Conditions
- After separation from cells: Ambient: 2 hours; Refrigerated: 6 days; Frozen: 3 months
Effective August 20, 2012
||122% basal activity or less
||123% basal activity or greater
Positive results (123 percent or greater) are consistent with Graves disease but do not always correlate with the presence and severity of hyperthyroidism. Antibodies to the Thyroid Stimulating Hormone Receptor (TSHR) may be stimulating, blocking, or neutral. Stimulating antibodies mimic the action of TSH and cause hyperthyroidism (Graves disease). This test determines the net effect of all TSHR antibody types present in the serum specimen.
See Compliance Statement B: www.aruplab.com/CS
An elevated Thyroid Stimulating Hormone (TSH) value above 6 mU/L may produce a weakly positive Thyroid Stimulating Immunoglobulin (TSI) result (123 percent or greater).
|Component Test Code*||Component Chart Name|
|0099430||Thyroid Stimulating Immunoglobulin|
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
- Autoimmune Thyroid Stimulator
- Thyroid Stimulating Antibody
- Thyroid-Stimulating Immunoglobulin Serum
- TSI concentration