Medicine Which of the following statements about Diabetes Insipidus is true: A Urine osmolality should be > 300 mosm/L B Plasma osmolality should be < 280 mmol/L C Water deprivation test is required D Plasma osmolality should be > 300 mosm/L prior to H2O Deprivation 💡 Explanation Which of the following statements about Diabetes Insipidus is true: ✓ Correct Answer: C. Water deprivation test is required