Your child’s doctor will look at the water and electrolyte imbalances in your child’s blood and urine to find out which type of tubulopathy they have. This will allow your doctor to decide on the right treatment for your child.

Your child will have blood tests and urine tests.

Their height, weight and blood pressure will be measured.

You may be asked to measure how much urine your child produces in a day.

You will be asked about any medication that your child is taking to see if this may have caused their AVP resistance. If your child is taking lithium, it is recommended that their kidney function is checked every three months.

Genetic testing of family members may be offered if your child’s AVP resistance is caused by a genetic mutation.

In some cases, an ultrasound scan of your child’s kidneys may be recommended to check for any damage or evidence of kidney stones.

Your child may have an X-ray to check how healthy their bones are.

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