Important announcement

Green Grower Labs is certified in testing heavy metals for medical cannabis and I502. Please contact us for drop off information.

Click here to view HB 1453 in it’s entirety

Spokane’s most trusted cannabis testing laboratory

GGL is the lab that growers in Eastern Washington turn to for fast reliable cannabis testing. We get your product to market faster. GGL was built from the ground up to provide industrial growers and processors with efficient, state mandated testing. We serve the entire Eastern Washington region. Call or email GGL today to learn more about our services.

GGL is accredited to offer all I-502 required testing, terpenes, and pesticides. We are approved for testing of all PESTICIDES LISTED in WAC 314-55-108.

Potency Testing

We offer all I-502 required cannabinoids: THC, THCA, CBD, and CBDA. In addition we offer an extended potency screen of 16 cannabinoids in flower and extract.

Get Testing Results Faster

Stop sending your cannabis out of town to get it tested! We offer LOCAL testing for Spokane growers. Get your results online. Notifications available via text and email.

Full Service Lab

We can also do testing for residual solvents and microbial.


  • Local testing
  • Text when tests are ready for viewing
  • Personal log in for results
  • Competitive pricing