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HelpTest Code FATHO Anti-Th/To Ab
Specimen Required
Collection Container/Tube: Red
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Acceptable: 5 mL SST
Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube is acceptable. Spin down and send 1 mL of serum refrigerated in a plastic vial.
Method Name
RIPA Gel Radiography
Reporting Name
Anti-Th/To AbSpecimen Type
SerumSpecimen Minimum Volume
0.3 mL (volume does NOT allow for repeat testing)
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 60 days | ||
| Ambient | 7 days |
Reject Due To
| Gross hemolysis: | Reject |
| Thawing: | Warm OK; Cold OK |
| Gross lipemia: | Reject |
| Gross icterus | Reject |
| Other: | Anything other than serum; bacterial contamination |
Clinical Information
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.
Reference Values
Negative
Performing Laboratory
Esoterix EndocrinologyTest Classification
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.CPT Code Information
83516