Anti-Smith (Sm)

Specialist

also

What it isAutoantibodies that target Smith nuclear ribonucleoprotein, one of the most specific markers for systemic lupus.

DoesConfirms lupus diagnosis when positive.

GoodNegative excludes one specific lupus marker but doesn't rule out the disease.

BadPositive anti-Sm is highly specific for lupus and supports diagnosis even when ANA pattern is ambiguous.

Standard
Negative.
Optimal
Negative (lower is good)
Modifiers
Stable over time, less variable than dsDNA.

How to optimize

Lifestyle
Sun protection; stress management.
Diet
Mediterranean pattern.
Supplements
Omega-3 EPA+DHA (2–4g/day), vitamin D3.
Peptides
Drugs
Hydroxychloroquine, immunosuppressants for lupus.