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How do I prepare for a Wada test?

The following are the things you need to know before undergoing the Wada test -- a routine procedure for patients who are being evaluated for certain types of brain surgery:
  • You will need to have routine blood tests, including a chemistry profile, complete blood count, clotting tests, and usually anti-epileptic drug levels done within two to three weeks of the test.
  • If you are taking Coumadin (warfarin), call your doctor five days before the procedure. It will be necessary to stop taking it before your procedure.
  • Let us know if you have an allergy to x-ray contrast so that we can take the necessary precautions. If you are allergic to contrast, you may need to take medications beginning the day before the procedure to reduce the risk of an allergic reaction.
  • Make plans for someone to come with you to your procedure. During the procedure you may receive medicine that will make you drowsy. You will not be able to drive afterwards. Please have someone available to drive you home.

The day before the Wada test procedure:
  • Do not eat or drink anything after midnight.
  • You should take your routine medications, both the night before and the morning of the procedure (or as scheduled), with a small sip of water.

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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.