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Sm Antibody and RNP Antibody Blood Test

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Feature Labcorp Quest Diagnostics
Price $42.49 Coming soon
Results in ~2 business days โ€”
Sample type Blood Serum โ€”
Require fasting No โ€”

About the test

Sm/RNP Antibodies are autoantibodies directed against components of small nuclear ribonucleoproteins. They are primarily used in the diagnosis of systemic lupus erythematosus (SLE) and mixed connective tissue disease (MCTD), helping to distinguish between overlapping autoimmune conditions.

Included biomarkers & Reference ranges

Biomarker Reference range
RNP Antibody An autoantibody associated with mixed connective tissue disease and, at times, lupus. โ€”
Smith (Sm) Antibody An autoantibody highly specific for lupus, though present in only a portion of people with the disease. โ€”

Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.

How it works

  1. 1. Order online No referral or insurance
  2. 2. Get a requisition By email in 24โ€“72 hours
  3. 3. Visit a draw center Bring a matching photo ID
  4. 4. Get results Securely by email
  1. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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Schedule a consultation with a Hormunity specialist. Weโ€™ll walk through every marker, interpret what it means for you, and map out the next steps for your care.

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