TSIMM
Thyroid Stimulating Immunoglobulin
EPIC Test Procedure Code: LAB3490
Synonyms:
Thyroid Stimulating Inhibitory Immunoglobulin
TSI
Performing Lab:
Referral Laboratory
Container Type:
Plain red top or serum gel tube
Specimen Type:
Serum (preferred)
Preferred Volume:
3 mL
Alternate Specimens:
Plasma (EDTA or heparin)
Minimum Volume:
0.3 mL
Specimen Processing:
1. The serum or plasma must be separated from the cells by centrifugation ideally within 2 hours of collection.
2. If a non gel-tube is used, transfer the serum to a plastic transport tube.
Store and Transport:
Room Temperature
Stability:
Room temperature - 14 days
Refrigerated - 14 days
Frozen - 14 days
Unacceptable Condition:
Gross lipemia.
CPT Codes:
84445 - Thyroid Stimulating Immunoglobulin (EAP 30021209)
Method:
The IMMULITE 2000 TSI assay designed for the specific Semi-Quantitative detection of stimulating autoantibodies using a bridging format and human TSH receptor fragment chimeric recombinant proteins.
Reference Ranges:
Please refer to the performing lab report for applicable reference ranges