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Which is correct in normal humans

1. pH of urine is around 8
2. \( 20-30 \) mg of urea is excreted per day
3. Ketone bodies in urine indicate diabetes mellitus
4. Glycosuria is treated with hemodialysis

Correct answer: Ketone bodies in urine indicate diabetes mellitus

Solution

Ketone bodies in urine are a classic sign of diabetes mellitus, especially when insulin is deficient and the body shifts to fat metabolism. The other choices are incorrect because normal urine is usually slightly acidic, urea excretion is far higher than 20–30 mg/day, and glycosuria is not treated with hemodialysis.

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