NeuroDiagnostic Lab at UWMC

NeuroDiagnostic Lab at UWMC 1959 NE Pacific St., 7th Floor East, Seattle, WA 98195 206.598.4211     
​The NeuroDiagnostic Lab at UWMC provides electroencephalography and related diagnostic testing services on a provider-referral basis. Neurodiagnostic tests available are:

  • Electroencephalograms (EEGs)
  • Evoked potentials
    • Visual – pattern reversal and flash
    • Brainstem auditory evoked potentials
    • Somatosensory evoked potentials
  • Electroretinograms (ERGs) and electro-oculograms (EOGs)
    • Corneal full-field
    • Multifocal ERGs
  • Autonomic testing
    • Heart rate variability
    • Valsalva maneuver
    • Heart rate response to deep breathing
    • Tilt table
    • Quantitative sudomotor axon reflex testing (QSART)

Medications best avoided before Autonomic Testing:

  • Antihypertensives/Vasodilators
  • Antiarrhythmics (Class 1A)
  • Cholinergics & Sympathomimetics
  • Antipsychotics/Antidepressants including SSRIs
  • Carbonic Anhydrase Inhibitors
  • Antiparkinsonian Agents
  • Pain Medications (except: NSAIDs, Tylenol, Cox2 Inhibitors)
  • Skeletal Muscle Relaxants
  • Antihistamines/Antipruritics (except: Claritin, Allegra, Zyrtec, Seldane)
  • Diuretics, Laxatives, & Antidiarrheals (except: Metamucil, Pepto-Bismol, Colace)
  • Antiemetics/Antivertigo
  • Miscellaneous:
    • Ephedrines
    • ETOH
    • Marijuana
    • Caffeine
    • Nicotine
    • Fludrocortisone
    • Oxybutynin
For questions regarding specific medications please contact us at 206-598-4211.

Diseases and conditions that can markedly compromise testing quality:

  • Pacemakers - please have patient bring all information to their appointment
  • A Fib/Arrythmias
  • Severe COPD

*Tilt table weight limit is 350 lbs.  If the patient's weight exceeds 350 lbs., we cannot do the tilt table portion of the testing.

Forms for referring providers:

EEG/Evoked Potential Referral Order (PDF)

Electroretinogram and Electro-oculogram Referral Order (PDF)


To fax documents, please use the clinic fax number: 206.598.4102