La. Stat. tit. 37 § 2839
On the effective date of this Section any person who is actually engaged in this state in the occupation, business, or profession of polygraphy and who was so engaged preceding the date of this Section, and who is using for that purpose the minimum instrumentation required by R.S. 37:2834, shall be issued a polygraphist's certificate which shall be effective no longer than December 31st, 1985 upon application within ninety days after the effective date of this Section and payment of the required certificate fee. The board may, however, require such applicant to submit satisfactory proof that he has been so engaged prior to the effective date of this Section. Any person applying for certification under this Section shall satisfy the requirement of R.S. 37:2838(1).
La. R.S. § 37:2839