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What does HGN stand for?

HGN stands for Horizontal Gaze Nystagmus

This definition appears very frequently

See other definitions of HGN

Other Resources:
We have 5 other meanings of HGN in our Acronym Attic

Samples in periodicals archive:

Drivers are asked to recite the alphabet, stand on one leg, complete a nine-step heel-to-toe walk and watch as a pen is moved in front of them as part of a horizontal gaze nystagmus test.