Vertebral artery test

{{More citations needed|date=November 2013}}

The Vertebral Artery Test or Wallenberg Test is a physical exam for vertebral artery insufficiency.

Commonly, the VA test involves cervical spine motion to an end-range position of rotation, extension or a combination of both. At this point, the physician assesses for vertebrobasilar insufficiency (VBI) symptoms. If the patient has VBI symptoms during the test, it is considered a positive result and a contraindication for cervical manipulation.{{cite journal|last=Richter|first=RR|author2=Reinking, MF |title=Evidence in practice. How does evidence on the diagnostic accuracy of the vertebral artery test influence teaching of the test in a professional physical therapist education program?|journal=Physical Therapy|date=June 2005|volume=85|issue=6|pages=589–99|pmid=15921479|url=http://ptjournal.apta.org/content/85/6/589.full|accessdate=29 November 2013}}

The specifics of VA testing vary among authors.

The test is positive if the patient complains of dizziness, visual changes, or nystagmus occurs.