II. Indication
- Evaluation of Diabetes Insipidus
III. Technique
- Fluid restriction or Injection of Hypertonic Saline
- Measure ADH to Serum Osmolality ratio
IV. Interpretation of ADH to Serum Osmolality ratio
- Decreased ratio in Central Diabetes Insipidus
- Increased ratio in Nephrogenic Diabetes Insipidus