Existing law, the California Uniform Controlled Substances Act, categorizes controlled substances into 5 schedules and places the greatest restrictions on those substances contained in Schedule I. Under existing law, the substances in Schedule I are deemed to have a high potential for abuse and no accepted medical use while substances in Schedules II through V are substances that have an accepted medical use, but have the potential for abuse. Existing law restricts the prescription, furnishing, possession, sale, and use of controlled substances, and makes a violation of those laws a crime, except as specified. Existing law defines drug paraphernalia and prohibits, among other things, the manufacture, sale, and possession, as specified, of drug paraphernalia. Existing law excludes from these prohibitions any testing equipment that is designed, marketed, used, or intended to be used to analyze a substance for the presence of fentanyl, ketamine, gamma hydroxybutyric acid, or any analog of fentanyl.