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The Steep Hill laboratory in Seattle, Washington was our third testing and research facility. We are a fully licensed I-502 testing facility, with state of the art equipment, and the best testing methodology in the industry.

Expanding Our Global Network

Steep Hill is expanding and proud to offer comprehensive cannabis testing across a network of laboratories across the U.S. states and abroad
Explore a Steep Hill License Opportunity

720 Industry Drive

Tukwila, WA, 98188

(253) 277-8936


Monday: 9am - 5pm

Tuesday: 9am - 5pm

Wednesday: 9am - 5pm

Thursday: 9am - 5pm

Friday: 9am - 5pm

Saturday: Closed

Sunday: Closed