2019 EULAR/ACR SLE Classification Criteria
2019 EULAR/ACR SLE classification: a positive ANA ≥ 1:80 entry gate, then the single highest-weighted item per domain summed; classify if entry met, total ≥ 10, and ≥ 1 clinical.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Entry: ANA ≥ 1:80 ever
- Yes
- Joint involvement
- Yes
- Anti-dsDNA or anti-Sm
- Yes
Result: Meets 2019 EULAR/ACR criteria for SLE (weighted total 12).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Entry + rule
- ANA ≥ 1:80 ever is a hard entry gate; only the highest-weighted item per domain counts; classify if entry met, total ≥ 10, and ≥ 1 clinical criterion.
- Top weights
- Renal biopsy III/IV 10; acute cutaneous, joints, pericarditis, anti-dsDNA/Sm 6; seizure, serous effusion 5.
What you enter
- Entry: ANA ≥ 1:80 ever
- Fever (+2)
- Leukopenia (+3)
- Thrombocytopenia (+4)
- Autoimmune hemolysis (+4)
- Delirium (+2)
- Psychosis (+3)
- Seizure (+5)
The other 14 fields
- Nonscarring alopecia (+2)
- Oral ulcers (+2)
- Subacute cutaneous or discoid lupus (+4)
- Acute cutaneous lupus (+6)
- Pleural or pericardial effusion (+5)
- Acute pericarditis (+6)
- Joint involvement (+6)
- Proteinuria > 0.5 g/24 h (+4)
- Renal biopsy class II or V (+8)
- Renal biopsy class III or IV (+10)
- Antiphospholipid antibodies (+2)
- Low C3 or C4 (+3)
- Low C3 and C4 (+4)
- Anti-dsDNA or anti-Sm (+6)
How this is calculated
Aringer M, Costenbader K, Daikh D, et al. 2019 European League Against Rheumatism / American College of Rheumatology classification criteria for systemic lupus erythematosus. Arthritis Rheumatol. 2019;71(9):1400-1412. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.