TX HB4879

Creates a grant program administered by the criminal justice division to help local law enforcement agencies pay for third-party laboratory testing of substances suspected of containing delta-9 tetrahydrocannabinol (THC) above the legal threshold of 0.3 percent concentration on a dry weight basis

Law enforcement agencies must employ peace officers and have a written agreement with the appropriate state prosecutor to evaluate testing evidence for potential prosecution in order to qualify for grants

Grant funds may only be used to pay third-party laboratories for THC concentration testing, not for other purposes

Requires grant recipients to submit annual reports including number and weight of substances tested, test results, types of substances, average testing costs, citations/warrants issued, and case outcomes

Criminal justice division must include program results and regional data in its biennial report and is authorized to adopt rules for program administration

Takes effect immediately with two-thirds legislative vote, otherwise September 1, 2025