Rheumatology · Primary Care · Emergency Medicine
Acute Gout Diagnosis Rule (Janssens) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
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0
≤4 points — gout unlikely
Band: ≤4 points — gout unlikely
Interpretation. ≤4 points — gout unlikely
Suggested management. Low probability of MSU-crystal gout in the derivation cohort. Consider alternate monoarthritis causes.
Acute Gout Diagnosis Rule (Janssens): 0 — ≤4 points — gout unlikely. Interpretation: ≤4 points — gout unlikely What to do: Low probability of MSU-crystal gout in the derivation cohort. Consider alternate monoarthritis causes. Inputs: Male sex: false; Previous patient-reported arthritis attack: false; Onset within 1 day: false; Joint redness: false; First MTP joint involvement: false; Hypertension or ≥1 cardiovascular disease: false; Serum uric acid >5.88 mg/dL (>0.35 mmol/L): false Source: Janssens HJ et al. A diagnostic rule for acute gouty arthritis in primary care without joint fluid analysis. Arch Intern Med. DOI: 10.1001/archinternmed.2010.196. PMID: 20625017. Scope: seven-item point score (male 2, prior attack 2, onset ≤1 day 0.5, redness 1, MTP1 2.5, HTN/CVD 1.5, uric acid >5.88 mg/dL 3.5); ≤4 unlikely, ≥8 likely. (2010)
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Clinical inputs
- Male sex
- Previous patient-reported arthritis attack
- Onset within 1 day
- Joint redness
- First MTP joint involvement
- Hypertension or ≥1 cardiovascular disease
- Serum uric acid >5.88 mg/dL (>0.35 mmol/L)
Primary source
Janssens HJ et al. A diagnostic rule for acute gouty arthritis in primary care without joint fluid analysis. Arch Intern Med. DOI: 10.1001/archinternmed.2010.196. PMID: 20625017. Scope: seven-item point score (male 2, prior attack 2, onset ≤1 day 0.5, redness 1, MTP1 2.5, HTN/CVD 1.5, uric acid >5.88 mg/dL 3.5); ≤4 unlikely, ≥8 likely. (2010)
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