Lab

Hare-Hickey Test

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Hare-Hickey Test

  • Indication
  1. Evaluation of Diabetes Insipidus
  • Technique
  1. Fluid restriction or Injection of Hypertonic Saline
  2. Measure ADH to Serum Osmolality ratio
  • Interpretation of ADH to Serum Osmolality ratio
  1. Decreased ratio in Central Diabetes Insipidus
  2. Increased ratio in Nephrogenic Diabetes Insipidus