Test Directory

Test Code
ENAP
Test Name
ENA Autoantibody Profile
CPT Codes
86235 X 2
Included Tests
  • Sm/RNP Autoantibody
  • Sm (Smith) Autoantibody
Expected Turnaround Time
4 - 7 days
Clinical Utility
Anti-Sm antibodies are highly specific for systemic lupus erythematosus (SLE). Anti-RNP antibodies in association with Anti-Sm antibodies are associated with systemic lupus erythematosus. Anti-RNP antibodies without Anti-Sm antibodies are associated with Mixed Connective Tissue Disease (MCTD).
Specimen and Container Info

Preferred Specimen Type: Serum

Desired Specimen Volume: 3 mL

Preferred Collection Container: Gold Top, Serum Separator

Processing and Submission Instructions

Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results.

Transport Instructions

Transport refrigerated. 

Stability Requirements

Refrigerated

7 days

Frozen

<20°C for long-term storage. 

Freeze/Thaw Cycles

Avoid multiple freeze/thaw cycles.

Methodology
Semi-Quantitative Multiplex Bead Assay
Reference Intervals

See individual test listings.

Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, Monday - Friday no holidays