The legal cannabis industry is one of the fastest-growing markets in the United States, with sales expected to reach $47 billion by 2025. As more states legalize both medical and recreational cannabis, regulators are tasked with developing effective quality control standards to ensure product safety and consistency. Proper quality control is essential for building trust with consumers, ensuring fair practices among cannabis businesses, and helping the industry as a whole establish legitimacy. Just as regulations exist around alcohol and tobacco, cannabis needs oversight to protect public health. This article will examine the various ways state regulators monitor legal cannabis for quality control.