ADH Anti Diuretic Hormone / Vasopressin Test
Also Known As
Test Parameters Included
- Serum ADH / Vasopressin Concentration (pg/mL)
- Pathologist Endocrinology Remark - correlated with serum osmolality and sodium reference intervals
Department
Methodology
Sample Required
Preparation
Schedule Report
24 Hours
Emergency Report
Yes
Frequently Asked Questions
What is ADH / Vasopressin?
ADH is a hormone produced by the posterior pituitary that regulates water balance by controlling how much water the kidneys reabsorb into the bloodstream.
Why is this test ordered?
It helps diagnose causes of abnormal sodium levels, diabetes insipidus, SIADH (Syndrome of Inappropriate ADH Secretion), and unexplained polyuria or dehydration.
Is fasting required?
Yes, fasting for 8–12 hours is recommended before collection. Stress, exercise, and certain medications can temporarily alter ADH levels and should be avoided prior to the test.
How is the sample collected?
A single blood sample of 1 mL serum is collected, preferably in the early morning. In some cases, a water deprivation test may be conducted alongside ADH measurement under medical supervision.
What do abnormal ADH levels mean?
High ADH may indicate SIADH, heart failure, or certain tumors. Low ADH may suggest diabetes insipidus or pituitary dysfunction. Results are interpreted alongside serum osmolality and sodium.
How to access the report?
Verified PDF report is available within 48 hours via www.drpatholab.in or WhatsApp/Email.
Test Description
Test Code
A97
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