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Multiple Choice

Which compound is listed as found in acidic urine?

Acidic urine tends to promote crystallization of compounds that have low solubility at lower pH. Cholesterol crystals are a well-known finding in the urine of patients with nephrotic syndrome due to lipiduria; these cholesterol crystals can appear in urine that is acidic. The other substances point to different situations: tyrosine and leucine crystals are classic signs of severe liver disease or certain inborn errors of metabolism, not specifically tied to acidic pH; sulfonamide crystals arise from drug precipitation and can occur depending on solubility, but they are drug-related rather than a typical diagnostic lipiduria finding. So cholesterol is the best match for a compound listed as found in acidic urine.

Acidic urine tends to promote crystallization of compounds that have low solubility at lower pH. Cholesterol crystals are a well-known finding in the urine of patients with nephrotic syndrome due to lipiduria; these cholesterol crystals can appear in urine that is acidic. The other substances point to different situations: tyrosine and leucine crystals are classic signs of severe liver disease or certain inborn errors of metabolism, not specifically tied to acidic pH; sulfonamide crystals arise from drug precipitation and can occur depending on solubility, but they are drug-related rather than a typical diagnostic lipiduria finding. So cholesterol is the best match for a compound listed as found in acidic urine.