Nevada Revised Statutes
Chapter 648 - Private Investigators, Private Patrol Officers, Polygraphic Examiners, Process Servers, Repossessors, Dog Handlers and Registered Employees
NRS 648.195 - Opinion of examiner or intern.

1. An examiner or intern shall not render a written or oral opinion based upon his or her analysis of polygraphic charts without administering two or more charts with the same questions on at least two of the charts.
2. An examiner or intern shall not render an opinion based upon analysis of polygraphic charts without affording the person examined an opportunity to explain any physiological effects recorded on those charts which indicate deception on the part of the person examined.
3. The opinion of an examiner or intern with regard to a polygraphic examination may refer only to truth or deception on the part of the person examined. An examiner or intern may not give an opinion as to the guilt or innocence of the person examined. An examiner or intern may indicate the person’s knowledge of elements of an act as shown by analysis of polygraphic charts obtained during the conduct of examinations which measure peaks of tension.
4. An examiner or intern shall advise the person examined of his or her opinion concerning the person’s veracity within a reasonable time after the examination.
(Added to NRS by 1985, 1331)

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