“Prohibited substance” means any of the following substances if the person who uses the substance has not been issued a valid prescription to use the substance and the substance is classified in schedule I or II pursuant to NRS 453.166 or 453.176 when it is used:

1. 1. Amphetamine.
2. 2. Cocaine or cocaine metabolite.
3. 3. Heroin or heroin metabolite (morphine or 6-monoacetyl morphine).
4. 4. Lysergic acid diethylamide.
5. 5. Marijuana or marijuana metabolite.
6. 6. Methamphetamine.
7. 7. Phencyclidine.

(Added to NRS by 1999, 3414)—(Substituted in revision for NRS 484.1245)