Anti-Smith (Anti-Sm)

Rheumatology

Normal Reference Ranges

Adult

Negative Qualitative

Pediatric

Negative Qualitative

Clinical Significance

Extremely specific for SLE (found in ~30% of patients). Does not correlate with disease activity.

Causes of High

  • Systemic Lupus Erythematosus (SLE)

Causes of Low

  • Normal finding