If a person undergoes a prolonged fasting then his urine will be found to contain higher levels of HomeExcretory System MCQsIf a person undergoes a prolonged fasting then his urine will be found to contain higher levels of Q. If a person undergoes a prolonged fasting then his urine will be found to contain higher levels of A. Ketones B. Amino acids C. Fats D. Glucose Answer: Ketones