Health and Safety Code § 11303

(a) A program, employee, contractor, volunteer, owner, or other person acting in the good faith provision of controlled substance checking services and acting in accordance with established protocols shall not be subject to any of the following:

(1) Detention, arrest, or prosecution for a violation of this division, including for attempting to, aiding and abetting in, or conspiracy to commit a violation of this division.

(2) Forfeiture of property.

(3) Any civil or administrative penalty or liability of any kind, including disciplinary action by a professional licensing board, credentialing restrictions, contractual or civil liability, or employment action.

(4) Denial of a right or privilege for actions, conduct, or omissions relating to the operation of a controlled substance checking service in compliance with this article and any rules adopted pursuant to this article.

(b) The exemption provided in this section shall not apply to a party acting as a controlled substance checking service in a negligent manner or in bad faith.