La. R.S. 37:2834

As minimum instrumentation requirements, a polygraph instrument used by a polygraphist to test or question individuals for the purpose of detecting deception or verifying the truth of statements shall record visually, permanently and simultaneously: (1) a person's cardiovascular pattern, (2) a person's respiratory pattern and (3) a person's galvanic skin responses. Patterns of other physiological changes in addition to (1), (2), and (3) may also be recorded in conjunction with, but not without the required minimum instrumentation. The use by a polygraphist of any instrument or device to detect deception or to verify the truth of statements which does not meet the minimum instrumentation requirements of this Section is hereby prohibited, and the operation of such equipment by a polygraphist that does not meet such minimum requirements shall be subject to penalties and may be enjoined in the manner hereinafter provided.