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Autoimmune

Anti-dsDNA antibodies (ANA follow-up marker)

Anti ds-DNA is crucial for women, as SLE affects women approximately 9 times more often than men, particularly during reproductive years. It helps diagnose and monitor disease activity.

Doctor's Assessment Included

What It Measures

This test measures antibodies directed against both double-stranded and single-stranded DNA. Anti-dsDNA is the more clinically significant component and is included in SLE classification criteria.

Why It Matters

Anti-dsDNA is one of the most specific markers for SLE and is included in the ACR/EULAR classification criteria. Rising titres may predict lupus flares, especially renal involvement.

When to Test

Testing could be indicated when SLE is suspected, for monitoring known SLE disease activity, or when ANA is positive and further characterisation is needed.

Symptoms

Low Levels

A negative result makes SLE less likely but does not exclude it. Some SLE patients are anti-dsDNA negative, particularly those with mild or cutaneous-predominant disease.

High Levels

Elevated anti-dsDNA in the context of compatible symptoms strongly supports SLE diagnosis. High titres are particularly associated with lupus nephritis and may fluctuate with disease activity.

Lifestyle Tips

If anti-dsDNA positive, consult a rheumatologist. Sun protection is essential as UV exposure can trigger lupus flares. Maintain regular monitoring of kidney function and disease activity markers.

Frequently Asked Questions

How specific is anti-dsDNA for lupus?
Anti-dsDNA has approximately 95% specificity for SLE, making it one of the most useful confirmatory tests when lupus is suspected.
Do anti-dsDNA levels correlate with disease activity?
Often yes, particularly for renal involvement. Rising titres may precede clinical flares, making it useful for monitoring.
What is the difference between dsDNA and ssDNA antibodies?
Anti-dsDNA is highly specific for SLE. Anti-ssDNA is less specific and can be found in drug-induced lupus and other autoimmune conditions.

Anti ds-DNA + ss-DNA

€117,-