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Anti-Th/To Ab (RDL)

CPT 83516

Test Details

Methodology

RIPA gel radiography

Result Turnaround Time

14 - 21 days

Related Documents

Use

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.

Specimen Requirements

Test Includes

This test is a component of Scleroderma Comprehensive Profile, Scleroderma Comprehensive Profile Plus, MyoMarker, Myositis.

Limitations

This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

Specimen

Serum

Volume

1 mL

Minimum Volume

0.3 mL (Note: This volume does not allow for repeat testing.)

Container

Red-top tube or gel-barrier tube

Storage Instructions

Refrigerate or freeze.

Causes for Rejection

Grossly hemolyzed; bacterial contamination; lipemic specimen; icteric specimen; non-serum specimen types

Collection 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.

Stability Requirements

Temperature

Period

Room temperature

7 days

Refrigerated

14 days

Frozen

60 days

Freeze/thaw cycles

Stable x1

Reference Range

Negative

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
520016 Anti-Th/To Ab (RDL) 81742-9 520038 Anti-Th/To Ab (RDL) 81743-7
Order Code520016
Order Code NameAnti-Th/To Ab (RDL)
Order Loinc81742-9
Result Code520038
Result Code NameAnti-Th/To Ab (RDL)
UofM
Result LOINC81743-7