Washington State has been at the forefront of cannabis reform, legalizing medical marijuana in 1998 and then becoming one of the first states to legalize adult-use cannabis with Initiative 502 (I-502) in November 2012. The first recreational cannabis sales began in July 2014, establishing a robust and regulated market.

The Washington cannabis market, regulated by the Washington State Liquor and Cannabis Board (WSLCB), places a strong emphasis on product safety and quality. This makes cannabis testing facilities an indispensable part of the supply chain, ensuring that all products—from flower and edibles to concentrates and liquids—meet stringent state standards before reaching consumers in cities like Seattle, Spokane, Tacoma, and Vancouver.