From the Desk of Paul Gordon, MD From the Desk of Paul Gordon, MD From the Desk of Paul Gordon, MD


Dr. Weimer with Patient The Clinical autonomic laboratory directed by Dr. Louis Weimer is a testing laboratory in the department of neurology dedicated to non-invasive evaluation of dysautonomia, autonomic failure, neurogenic orthostatic hypotension, orthostatic intolerance, and small fiber nerve function. The laboratory is located in the Neurological Institute of New York on the Columbia Presbyterian Medical Center campus in upper Manhattan.

Patient Information

Minor advance preparation is needed for most tests, but testing conditions need to be controlled as much as possible for reliable results. Testing is non-invasive and should not be unpleasant. Testing time ranges from 30-75 minutes depending on the tests performed.

Before arriving for testing patients should:

  • Have your referring physician’s office call to schedule. We are not allowed to accept direct patient referrals. Once ordered call if necessary to change the date or time as openings permit.

  • Bring a referral slip or information slip from the referring physician if provided.

  • Ask if any current medications should be stopped for 1 or 2 days prior to testing

  • Refrain from using caffeine or nicotine on the testing day

  • Avoid heavy exercise on the day of testing

  • Try and get a full night’s sleep prior to testing

  • Patients should have recovered from any recent infections or other temporary illness

  • Wear loose and not constrictive clothing especially around the legs

  • Eat a small but adequate breakfast or lunch prior to testing. Fasting is NOT required.

  • Clarify insurance issues and preapproval before the testing day

  • Please notify the staff in advance for rescheduling or cancellations so that someone else can fill the slot.

After arriving for testing patients should inform the staff:

  • Of current medications to ensure testing results are not affected.

  • If you have a pacemaker or a heart rhythm problem such as atrial fibrillation