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Anti-Th/To Ab
Test Code91290
Alias/See Also
LAB00320
CPT Codes
83516
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Instructions
Separate serum from cells within one hour of collection. Transfer to a plastic transport tube before shipping. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 60 days
Refrigerated: 14 days
Frozen: 60 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Lipemia • Bacterial contamination • Icteric • Non-serum specimen types
Methodology
Radio Immunoprecipitation Assay Gel Radiography
FDA Status
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.
Setup Schedule
Varies
Report Available
16 days
Reference Range
Negative
Clinical Significance
The Th/To antibodies are present in 10-19% of patients with limited SSc, in 11% of patients with diffuse cutaneous SSc, and in 3% of patients with primary Raynaud's disease. Anti-Th/To antibody has been shown to be highly specific for patients with SSc.
Performing Laboratory
| Esoterix Endocrinology |
| 4301 Lost Hills Road |
| Calabasas Hills, CA 91301-5358 |