Top Testing Labs 2026
Cannabis testing and quality assurance laboratories.
Browse by State — click to see listings near you:
SC Labs | California
Testing LabSanta Cruz, California
★★★★☆ProVerde Laboratories, Inc.
Testing LabMilford, Massachusetts
★★★★☆Steep Hill
Testing LabOakland, California
Anandia Laboratories
Testing LabVancouver, British Columbia
Excelbis Labs | Cannabis Testing Laboratory
Testing LabSanta Ana, California
★★★★★Confidence Analytics
Testing LabRedmond, Washington
★★★★☆SC Labs | Colorado (Hemp)
Testing LabDenver, Colorado
★★★★☆Anresco Laboratories
Testing LabSan Francisco, California
★★★★☆MCR Labs
Testing LabFramingham, Massachusetts
★★★★☆Kaycha Labs
Testing LabRaleigh, North Carolina
Specialty Analytical
Testing LabPortland, Oregon
★★★★★Prompt Praxis Laboratories
Testing LabPhoenix, Arizona
★★★★★Encore Labs | Cannabis Testing Lab
Testing LabLos Angeles, California
★★★★★Gobi Analytical
Testing LabBoulder, Colorado
★★★★☆SC Labs | Colorado
Testing LabDenver, Colorado
★★★★☆EMSL CANADA, Inc.
Testing LabOttawa, Ontario
★★★★☆Greenleaf Labs LLC
Testing LabLas Vegas, Nevada
★★★★☆Alberta Precision Laboratories
Testing LabCalgary, Alberta
★★★☆☆About Testing Labs
Cannabis testing laboratories are state-licensed facilities that analyze cannabis and hemp products for potency, pesticides, heavy metals, microbials, and residual solvents. All legal cannabis products must pass laboratory testing before they can be sold at retail. Testing labs play a vital role in consumer safety, regulatory compliance, and market trust. Leading cannabis testing labs invest in ISO accreditation, certified reference materials, and advanced analytical equipment. Cannabis Promotions supports cannabis testing labs with branded promotional materials for industry trade shows, conferences, and client relationships.
Frequently Asked Questions
Why does cannabis need to be tested?
State law requires all legal cannabis products to be tested by an accredited laboratory for potency (THC/CBD levels), pesticides, heavy metals, microbials, and residual solvents before retail sale.
What does a COA mean on cannabis products?
A Certificate of Analysis (COA) is the lab report showing the results of required cannabis testing. COAs confirm a product passed all state-required tests and is safe for consumption.
How do I find a cannabis testing lab?
Use this directory to find state-licensed cannabis testing labs by state. Labs must be licensed by your state's cannabis control authority.
How long does cannabis testing take?
Standard cannabis testing turnaround is typically 3–7 business days depending on the lab and test panel. Expedited testing is available at most labs for an additional fee.
