Gout test effective without fluid analysis

Dutch rheumatologists have come up with a gout score that improves the predictive value of clinical diagnosis when joint fluid analysis is not practical or available.

In a trial of 400 patients with monoarthritis, around half of whom had MSU crystals in their joint fluid, the test had a nearly 90% positive predictive value for patients who scored eight or more, and a 95% negative predictive value for those who scored four or less.

Patients score a variable number of points for