Testing & Diagnosis for Diabetes Insipidus in Children

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How is diabetes insipidus diagnosed?
In addition to taking a complete medical history and physical examination, your child's physician will ask for details about the following: 

  • How much fluid he is drinking
  • How much and what kind of food he’s eating
  • How often and how regularly he goes to the bathroom (both bowel and bladder) 

The following tests may also be used to diagnose diabetes insipidus:

  • Urine tests—These allow your doctor to compare how concentrated (or diluted) your child’s urine is.

  • Blood tests—If the blood is more concentrated than the urine, that’s a sign your child might have diabetes insipidus.

  • Water deprivation test—This test withholds water from your child for a short period of time to observe if dehydration occurs. If your child gets dehydrated more quickly than is normal, he may have diabetes insipidus.

  • Magnetic resonance imaging (MRI)—This imaging study allows your child’s doctor to check for pituitary abnormalities. 

After we complete all necessary tests, our experts meet to review and discuss what they have learned about your child's condition. Then we will meet with you and your family to discuss the results and outline the best treatment options for your child.

We are grateful to have been ranked #1 on U.S. News & World Report's list of the best children's hospitals in the nation for the third year in a row, an honor we could not have achieved without the patients and families who inspire us to do our very best for them. Thanks to you, Boston Children's is a place where we can write the greatest children's stories ever told.”
- Sandra L. Fenwick, President and CEO

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