Syndrome of inappropriate antidiuretic hormone secretion is diagnosed by all of the following except -

Syndrome of inappropriate antidiuretic hormone secretion is diagnosed

1.	Syndrome of inappropriate antidiuretic hormone secretion is diagnosed by all of the following except -
A.	Hyponatremia
B.	Decreased osmolality (<280 mosm/kg)
C.	Normal blood nitrogen
D.	Normal thyroid function
Answer» D. Normal thyroid function