Anti-SSB (La)
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- Standard
- Fasting
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Anti-SSB (La) antibodies are autoantibodies directed against small ribonucleoproteins. They are a critical component of the ENA (Extractable Nuclear Antigen) Panel. Their primary clinical utility is in the diagnosis of Sjögren’s Syndrome, where they are found in 40-50% of cases, and Systemic Lupus Erythematosus (SLE), appearing in 10-15% of cases. In pregnant women, the presence of Anti-SSB (often co-occurring with Anti-SSA) is a significant marker for the risk of neonatal lupus and congenital heart block in the fetus.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Anti-SSB antibodies rarely occur in isolation; they are almost always found in conjunction with Anti-SSA (Ro). A positive result for SSB with a negative SSA is unusual and may require re-testing or confirmatory methodology to rule out lab error or rare cross-reactivity.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Anti-SSB (La):
Official Sources
Research & Guidelines
- PubMed: Anti-SSB (La) Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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