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Expert, Compliant Cannabis Testing Labs

When choosing a cannabis testing lab, precision and expertise matter as much as speed. At Certified Laboratories, we set the gold standard for quality. Our ISO 17025-accredited and DEA-registered labs ensure data you can stand behind. With multiple locations also holding cGMP certification, we deliver results you can trust, backed by the highest quality standards in the industry.  

We also provide direct access to technical experts who can explain complex findings, out-of-specification results, and next steps. Accurate. Defensible. Reliable. We’re your nationwide partner in expert cannabis and hemp testing.

Do you need cannabis or hemp testing in Canada? Our fellow Certified Group company, Labstat, provides cannabis and hemp testing services for licensed producers in Canada.  

Why Choose Our Cannabis Testing Labs?

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ISO 17025 Accreditation

Rigorous quality control standards. Data you can trust. 

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cGMP Certification*

Higher standards. Better processes. More reliable results. 
*Burbank, CA &
Carrollton, TX labs

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Direct-Connect to Experts

Real people. Real answers. No guesswork – just clarity. 

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Validated Methods & Low LOQ/LOD

Sensitive instrumentation for precise results – because accuracy drives decisions.

Comprehensive Cannabis Testing Services

We offer a comprehensive list of services to test cannabis, both marijuana and hemp, to help you ensure quality and compliance at every stage of production. From cannabis potency testing to contaminant screening, we provide accurate, trustworthy results. Our standard cannabis testing services are listed below – contact us if you don’t see what you need.

Cannabinoid Potency Testing

We offer full-spectrum cannabinoid profiling so you can ensure compliance, validate claims, and give your customers exactly what they expect. Our standard cannabinoids include the following (with more added regularly); contact us about additional cannabinoids and we may be able to develop a method to suit your needs.

  • Delta 9-Tetrahydrocannabinol (Δ9-THC) 
  • Delta 8-Tetrahydrocannabinol (Δ8-THC) 
  • Tetrahydrocannabinolic Acid (THCA) 
  • Cannabidiol (CBD) 
  • Cannabidiolic Acid (CBDA) 
  • Cannabigerol (CBG) 
  • Cannabinol (CBN) 
  • Cannabidivarin (CBDV) 
  • Cannabigerolic Acid (CBGA) 
  • Cannabichromene (CBC) 
  • Delta 8-Tetrahydrocannabidivarin (Δ8-THCV) 
  • Delta 9-Tetrahydrocannabidivarin (Δ9-THCV) 
  • (6aR,9R)-Δ10-Tetrahydrocannabinol (Δ10-THC) 
  • Cannabidivarinic Acid (CBDVA) 
  • Delta 9-Tetrahydrocannabivarinic Acid (Δ9-THCVA) 
  • Delta 8-Tetrahydrocannabivarinic Acid (Δ8-THCVA)
  • 9S-Hexahydrocannabinol (9S-HHC)
  • 9R-Hexahydrocannabinol (9R-HHC)
  • Delta 9-Tetrahydrocannabiphorol (Δ9-THCP)
  • Delta 8-Tetrahydrocannabiphorol (Δ8-THCP)
  • Delta 9-Tetrahydrocannabinol acetate (Δ9-THCO)
  • Delta 8-Tetrahydrocannabinol acetate (Δ8-THCO)

Equipment

High-Performance Liquid Chromatography with UV detection (HPLC-UV)

Limits of Detection (LOD)

<0.1 ppm

Limits of Quantification (LOQ)

<0.3 ppm

Offering 

Terpene Profile Testing

Savvy cannabis consumers care as much about the product’s terpene profile as its potency. Including that information on your product labels is necessary to meet expectations and boost sales. Our terpene profile testing pinpoints dozens of terpenes to help you… 

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Differentiate your products from the competition and increase sales.

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Craft targeted experiences to stay ahead of trends and satisfy your customers.

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Validate your product’s terpene profile for labeling compliance.

Equipment

Gas ChromatographyMass Spectrometry (GC-MS)

Limits of Detection (LOD)

<0.0008%

Limits of Quantification (LOQ)

0.02%

Contaminants Testing

We screen for harmful contaminants to ensure your cannabis products meet safety and regulatory standards: 

  • Pesticides: Full-panel testing for a wide range of commonly used and residual pesticides.

  • Residual Solvents: Screening for Class 1, 2, and 3 solvents to meet safety thresholds.

  • Mycotoxins: Screening for toxic fungal byproducts to ensure product safety. 
  • Heavy Metals: Detection of toxic metals including…
    • Lead (Pb)
    • Mercury (Hg)
    • Cadmium (Cd)
    • Arsenic (As)
  • Microbials: Comprehensive microbial testing for harmful organisms:
    • Yeast and mold
    • Total Plate Count (TPC)
    • Pathogens (USP 61/62 standards)

Offering 

Water Activity & Moisture Content

Ensuring proper moisture levels is essential for product stability and quality. We test water activity to… 

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Confirm dry weight for biomass and dry flower sales.

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Prevent microbial growth and spoilage.

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Maintain product integrity throughout the supply chain.

Your Products, Our Expertise

Our cannabis testing labs can test your samples at every stage of the production process, providing an accurate picture of your entire supply chain.

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Extracts:

Oils, concentrates, distillates

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Plant Materials:

Flower, biomass 

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    Finished Products:

    • Edibles (gummies, chocolate)
    • Beverages
    • Topicals
    • Vapes
    • Capsules and tinctures

    Our expertise and sensitive equipment deliver the highest levels of accuracy, ensuring you can trust the data we provide to guide critical decisions.

    Direct-Connect to Cannabis Testing Experts

    We’re more than a lab – we’re your partner for compliant, expert cannabis and hemp testing. When you work with us, you get more than a report. You get direct, one-on-one support from technical experts who can… 

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    Explain your results in plain language.

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    Help you understand out-of-spec findings.

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    Guide your testing strategy with scientific clarity.

    Ready to Get Started?

    Ready for accurate, reliable cannabis testing backed by industry-leading standards? Submit the form below and our team will get back to you in 1-2 business days!