A 40-year-old male comes to the physician because of recurrent painful flares and swelling of the metatarsal-phalangeal joint of the great toe. Laboratory study of urine sample shows extremely low pH and pink discoloration. Which of the following metabolic intermediates is the most likely cause of changes in this patient's urine?
- A Tricalcium phosphate
- B Uric acid
- C Ammonia
- D Chloride
- E Magnesium sulfate
Правильна відповідь: B. Uric acid
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