Pattern of Joint/Bursa Involvement

Other joint or bursa (shoulder, hip, etc.) (-1 pt)-1Ankle or midfoot (without first MTP) (+1 pt)+1First MTP joint (wrist/elbow with or without this, +2 pts if applicable)+2

Characteristics of Symptomatic Episode (check all that apply)

None of the three characteristics (+0 pts)+01 of the three characteristics (+1 pt)+12 of the three characteristics (+2 pts)+23 of the three characteristics (+3 pts)+3

Time Course of Episode(s)

No typical features or no prior episodes (+0 pts)+0One typical episode (resolution, peak < 24h, complete inter-episode remission) (+1 pt)+1Recurrent typical episodes (+2 pts)+2

Clinical Evidence of Tophus

No tophi present (+0 pts)+0Tophus present (+4 pts)+4

Serum Urate (Measured During Inter-Ictal Period Ideally)

< 4 mg/dL [240 µmol/L] (-4 pts)-44–< 6 mg/dL [240–< 360 µmol/L] (+0 pts)+06 to < 8 mg/dL [360–< 480 µmol/L] (+2 pts)+28 to < 10 mg/dL [480–< 600 µmol/L] (+3 pts)+3≥ 10 mg/dL [≥ 600 µmol/L] (+4 pts)+4

Synovial Fluid Analysis of Affected Joint (If Done)

Not done or not applicable (+0 pts)+0Done, MSU crystals NOT identified (-2 pts)-2

Imaging Evidence of Urate Deposition

No imaging or no urate deposition on imaging (+0 pts)+0Ultrasound double contour sign or DECT urate deposition (+4 pts)+4

Imaging Evidence of Gout-Related Joint Damage

No imaging evidence of erosion / not imaged (+0 pts)+0Gout-related erosion on conventional X-ray or CT (+4 pts)+4

2015 ACR/EULAR Gout Classification Criteria

2015 ACR/EULAR Gout Classification Criteria