1 doctor weighed in:

What is the fluid deprivation test for diabetes insipidus?

1 doctor weighed in
Dr. Joseph Woods
Pathology

In brief: Vasopressin test.

This is a dehydration test for diabetes insipidus.
First, fluid is withheld until urine osmolality is stable. Then 5 u of vasopressin is given by subcutaneous injection. The urine and plasma osmolality/concentration is measures before and one hour after the injection. Argenine vasopressin or avp given to these patients causes a >9% rise in urine osmolality. In normal patients, it is <9%.

In brief: Vasopressin test.

This is a dehydration test for diabetes insipidus.
First, fluid is withheld until urine osmolality is stable. Then 5 u of vasopressin is given by subcutaneous injection. The urine and plasma osmolality/concentration is measures before and one hour after the injection. Argenine vasopressin or avp given to these patients causes a >9% rise in urine osmolality. In normal patients, it is <9%.
Dr. Joseph Woods
Dr. Joseph Woods
Thank
Get help from a real doctor now
Dr. Jack Hinkle
Board Certified,
384K people helped
Continue
108,000 doctors available
Read more answers from doctors