Table 1 Overview of the criteria and cutoffs used in historical algorithms to diagnose gout

Cutoff for gout classification

≥2 of 4 criteria

≥2 of 4 criteria

6 of 12 criteria OR presence of MSU in SF

4 of 8 criteria OR presence of MSU in SF

>8 points^a

Serum uric acid, μmol/L,

Male >420 female >360

>2 SD normal

>2 SD normal

>350 (3.5 points)

Presence of tophi

X

X

X

X

X (13 points)

MSU crystals in SF or tissue

x

(x)

History of attacks of painful joint swelling with abrupt onset and resolution within 2 weeks

≥2 attacks

≥2 attacks

A history or observation of podagra

X

X

Rapid response to colchicine treatment, defined as a major reduction in the objective signs of inflammation within 48 h

X

More than one attack of acute arthritis

X

X

Maximum inflammation developed within 1 day

X

X

X (0.5 point)

Oligoarthritis attack

X

Redness observed over the joints

X

X

X (1 point)

First MTP joint painful or swollen

X

Unilateral first MTP joint attack

X

Unilateral tarsal joint attack

X

X

Asymmetrical swelling within a joint on X-ray

X

Subcortical cysts without erosions on X-ray

X

Joint culture negative for organisms during attack

X

Mono and/or oligoarticular attacks

X

X (2 points)

Male sex

X (2 points)

MTP1 involvement

X (2.5 points)

Hypertension or more than one cardiovascular disease^b

X (1.5 points)