Acute Gout Diagnosis Rule

RheumatologyDiagnosisBeta toolThis tool is in beta. It has undergone internal validation but still requires additional testing. Always confirm the data entered and the results obtained before clinical use. It should not be used as the sole basis for clinical decisions.

Male sexExplicit yes/no response.

YesNo

Previous patient-reported arthritis attackInclude any previous acute arthritis attack reported by the patient.

YesNo

Onset within 1 dayScore yes only when the current attack had onset within one day.

YesNo

Joint rednessVisible redness during the acute presentation.

YesNo

First metatarsophalangeal joint involvementScore yes when the first MTP joint is involved.

YesNo

Hypertension or at least 1 cardiovascular diseaseUse the combined published predictor exactly as defined.

YesNo

Serum urate

Use the laboratory value with the matching unit. Threshold is strictly >5.88 mg/dL, >350 µmol/L, or >0.35 mmol/L.

Enter the data

The result appears automatically once all required fields are complete.

Clinical noticeEducational decisión-support tool only. It does not replace individual clinical assessment, crystal confirmation when needed, or urgent evaluation for septic arthritis.

Context and use

Total score = male sex (2) + previous attack (2) + onset within 1 day (0.5) + joint redness (1) + first MTP involvement (2.5) + hypertension/CVD (1.5) + serum urate above threshold (3.5).

Serum urate scores only when >5.88 mg/dL, >350 µmol/L, or >0.35 mmol/L. <=4.0: gout unlikely; 4.5-7.5: intermediate probability; >=8.0: gout likely.