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Multiple Choice

A patient has URIC: 670 μmol/L and urinalysis shows Uric Acid: PRESENT. What is the likely diagnosis?

Elevated uric acid in the blood signals hyperuricemia, which is the hallmark of gout, a condition where excess urate can crystallize in joints and cause painful inflammation. A serum uric acid level of 670 μmol/L is well above the normal range, supporting this tendency. Finding uric acid in the urine further reflects excess urate production and excretion, a pattern often seen in gout patients as the body attempts to eliminate the surplus uric acid. The other options don’t fit as well: cystinuria involves excess cystine in urine and specific cystine crystals, not elevated uric acid; diabetic nephropathy is characterized mainly by proteinuria and progressive kidney dysfunction rather than a primary uric acid problem; renal transplant rejection centers on immune-mediated graft injury with different laboratory cues. Thus, the combination of high serum urate and uric acid in urine most consistently points to gout.

Elevated uric acid in the blood signals hyperuricemia, which is the hallmark of gout, a condition where excess urate can crystallize in joints and cause painful inflammation. A serum uric acid level of 670 μmol/L is well above the normal range, supporting this tendency. Finding uric acid in the urine further reflects excess urate production and excretion, a pattern often seen in gout patients as the body attempts to eliminate the surplus uric acid. The other options don’t fit as well: cystinuria involves excess cystine in urine and specific cystine crystals, not elevated uric acid; diabetic nephropathy is characterized mainly by proteinuria and progressive kidney dysfunction rather than a primary uric acid problem; renal transplant rejection centers on immune-mediated graft injury with different laboratory cues. Thus, the combination of high serum urate and uric acid in urine most consistently points to gout.