Nevada Revised Statutes Title 52. Trade Regulations and Practices § 598.0925. “Deceptive trade practice” defined

(a) Makes an assertion of scientific, clinical or quantifiable fact in an advertisement which would cause a reasonable person to believe that the assertion is true, unless, at the time the assertion is made, the person making it has possession of factually objective scientific, clinical or quantifiable evidence which substantiates the assertion; or

(b) Fails upon request of the Commissioner or Attorney General to produce within 6 working days the substantiating evidence in his or her possession at the time the assertion of scientific, clinical or quantifiable fact was made.