Alabama Arkansas
Illinois Indiana Iowa Kentucky Louisiana Maine Massachusetts Michigan Mississippi Missouri
(only needed in St. Louis County) Nebraska Nevada New Mexico New
York (only needed in Erie & Suffolk Counties) North Carolina North
Dakota Oklahoma Oregon South Carolina South
Dakota Tennessee Utah Vermont Virginia West
Virginia
States that DO NOT license polygraph
examiners:
Alaska Arizona California Colorado Connecticut Delaware DC Florida Georgia Hawaii Idaho Kansas Maryland Minnesota Missouri
(but one county requires a license: St. Louis) Montana New
Hampshire New Jersey New York (but two counties require a license: Erie
& Suffolk) Ohio Pennsylvania Rhode
Island Texas Washington Washington DC Wisconsin Wyoming