A 55-year-old previously healthy man has had episodes of pain and swelling of the right first metatarsophalangeal (MP) joint for the past year. These flare-ups usually occur after consumption of alcohol, typically port wine (six grapes). On physical examination, there is exquisite tenderness with swelling and erythema of the right first MP joint. A joint aspiration is performed, and laboratory studies of the fluid obtained show needle-shaped crystals and many neutrophils in a small amount of fluid. Which of the following laboratory findings is most likely to be reported in this man?
Enroll to Pathology revision series and attend the Live TnD this sunday - Subscribe here today