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VNG (Videonystagmography)

What to expect:

The tests take approximately one and a half (1.5) hours (set up, running the exam, commencing exam).  The VNG assesses inner ear and central motor functions by measuring nystagmus, or involuntary eye movements.  You will be asked to complete several tasks while wearing infrared goggles. If you do not speak and/or understand English, you will need to bring a translator with you.  Please be advised that you may experience dizziness and/or nausea during this exam. If you are afraid you may not be able to drive after the exam, please make transportation arrangements.


Patient Preparation:

  1. Please make sure that you arrive at our Reston office location on time for your appointment. Exams are scheduled every hour, on the hour. If you are late, you will be asked to reschedule.

  2. Please do not wear any makeup of any kind.

  3. Please do not wear contact lenses.

  4. Please do not consume caffeine twelve (12) hours prior to the exam.

  5. Please do not smoke or eat three (3) hours prior to the exam. You may drink water.

  6. Certain substances can alter the body’s response to this exam. Therefore, the following medications should be avoided at least two (2) days prior to the exam:

  • Antihistamines: Zyrtec, Claritin, Benadryl, Actifed, Triaminic, and any allergy remedies.

  • Anti-Nausea: Dramamine, Compazine, Bonine, Marezine, Phenergan, Thorazine, etc.

  • Anti-Vertigo: Antivert, Meclizine, Scopolamine, Flunarizine, etc.

  • Narcotic and Barbiturates: Codiene, Demerol, Teldrin, Triaminic, and any cold remedies.

  • Sedatives: Nembutal, Seconal, Dalmane, Doriden, Placidyl, Qualude, Butizol, Tylenol PM, and any other sleeping pills or aids.

  • Stimulants and Tranquilizers: Amphetamines, Valium, Librium, Atatax, Vistaril, Equanil, Triavil, Serax, etc.

   7. Please contact your insurance company to receive an estimate on what cost(s) you will be responsible for. We do not               check cost estimates. The CPT (Current Procedural Terminology) code(s) for the test is 92541-92547.


If you have any questions regarding this examination, please call us at (703) 478-0440. As stated in our payment policy, there is a late cancellation/no show fee of $250.00 that will be applied to the patient’s account if we are not notified of your cancellation 24 hours in advance.

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