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HelpTest Name FFTSI Thyroid-stimulating Immunoglobulin (TSI)
Specimen Required
Collection Container/Tube:
Preferred: Red-top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL serum
Collection Instructions:
1. Within 2 hours of collection, centrifuge and aliquot 1 mL of serum into a plastic vial.
2. Send refrigerate.
Method Name
IMMULITE 2000 TSI
Reporting Name
Thyroid Stim ImmunoglobulinSpecimen Type
SerumSpecimen Minimum Volume
Serum: 0.3 mL Note: This volume does not allow for repeat testing
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 14 days |
| Ambient | 14 days | |
| Frozen | 14 days |
Reject Due To
| Gross lipemia | Reject |
Reference Values
0.00-0.55 IU/L
Day(s) Performed
Monday through Friday
Report Available
4 to 8 daysPerforming Laboratory
LabCorp BurlingtonCPT Code Information
84445
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FFTSI | Thyroid Stim Immunoglobulin | Not Provided |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| FFTSI | Thyroid Stim Immunoglobulin | 30567-2 |