In a patient if administration of vasopressin does not increase the osmolality of urine, it indicates?
Renal hyposensitivity towards ADH REF: Harrison's 17th ed p. 274 If the osmolality of urine increases after administration of ADH - Nephrogenic DI (Renal hyposensitivity) If the osmolality of urine decreases after administration of ADH- Central DI
ADH deficieny
Renal hyposensitivity towards ADH
SIADH
Psychogenic polydipsia