Criteria |
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The patient is classified as having SLE if
Source: Petri M, Orbai AM, Alarcón GS ym. Derivation and validation of the Systemic Lupus International Collaborating Clinics classification criteria for systemic lupus erythematosus. Arthritis Rheum 2012;64(8):2677-86. |
Clinical criteria |
1. Acute cutaneous lupus |
2. Chronic cutaneous lupus |
3. Alopecia (nonscarring) |
4. Oral or nasal ulcers |
5. Synovitis involving two or more joints |
6. Serositis (pleuritis or pericarditis) |
7. Nephritis (proteinuria > 500 mg/24 h or red blood cell casts) |
8. Neurological findings (seizures, psychosis, mononeuritis multiplex, myelitis, peripheral or cranial neuropathy, or acute confusional state) |
9. Haemolytic anaemia |
10. Leucopenia (< 4 × 10 9 /l) at least once or lymphopenia (< 1 × 109 /l) at least once |
11. Thrombocytopenia (< 100 × 109 /l) at least once |
Immunological criteria |
12. Anti-dsDNA antibodies |
13. Anti-Sm antibodies |
14. Antiphospholipid antibodies (false-positive RPR, lupus anticoagulant, anticardiolipin [medium or high titer] or anti-beta-2-glycoprotein I) |
15.Low complement (C3, C4 or CH50) |
16. Direct Coombs test in the absence of hemolytic anemia |
17. ANA |