How do I prepare for a Wada test if I have diabetes?

The following are special instructions for taking the Wada test (a routine procedure for patients who are being evaluated for certain types of brain surgery) if you have diabetes:
  • For those who take insulin regularly, take half your neutral protamine Hagedorn (NPH) dose and half your normal dose of regular insulin on the day of the procedure.
  • Please remind your doctor or nurse practitioner about any diabetic medications you take. If you regularly take metformin or any metformin-containing medications (for example: Glucophage, Glucophage XR, Glucovance, or Glyburide), you should not take it the day of the procedure. You will need to have your labs checked in 48 hours before restarting the metformin or metformin-containing medication.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.