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Interpret Your Anti-CCP Antibodies Results
Enter your Anti-CCP value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
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Anti-CCP Antibodies Normal Ranges
Anti-CCP (anti-cyclic citrullinated peptide) antibodies are highly specific autoantibodies for Rheumatoid Arthritis (RA).
| Reference Range | Unit | Notes |
|---|---|---|
| 0 – 20 | U/mL | Negative <20; Positive ≥20 |
Common Causes of High Anti-CCP
Rheumatoid Arthritis (RA) — primary indication, highly specificRarely: Sjögren's syndrome, SLE, psoriatic arthritis (much lower frequency than RA)
Common Causes of Low Anti-CCP
Approximately 25–40% of RA patients are anti-CCP negative (seronegative RA)Seronegative RA tends to be less severe but still progressive
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