A professional cannabis laboratory worker examining a cannabis flower in a petri dish for cannabinoid testing.

THC Compliance: The Importance of Cannabinoid Testing

THC compliance stands out as the main concern for hemp farmers in today’s world when it comes to hemp genetics. High CBD yields are essential but keeping a compliant crop that will not run the risk of destruction due to THC content is the most crucial consideration for a farmer. Today we’ll briefly look at cannabinoids, compliance, testing methods, and the importance of having a testing plan with reliable testing partners before you plant.

The U.S. Farm Bill defines hemp as cannabis that contains less than 0.3% total THC by dry weight. THC, CBD’s psychoactive constituent, is classified as a Schedule 1 drug by the Food and Drug Administration and is highly regulated. CBD is non-psychoactive and is not considered a Schedule 1 drug by the FDA and is not regulated (although recent CBD patents by GW Pharma will incur regulation). Interestingly, many modern CBD-rich hemp genetics derive from so-called “drug-type” cannabis strains that once contained high levels of THC. These genetics were bred over generations to minimize THC production and maximize CBD content.

The truth is that many CBD-rich hemp varietals are nearly indistinguishable from their THC-containing “marijuana” sisters. The visual appeal, aroma (terpene content), and structure can be almost identical between two different genotypes, one with THC and one that does not. When I first started breeding with high CBD/low THC genetics in 2011, it was next to impossible to tell the difference in cannabinoid content until we submitted samples to the lab for cannabinoid testing.

I assumed many of the plants would have high THC content that contained very low THC and had high amounts of CBD. Testing laboratories across the U.S. have opened their doors to hemp growers. Now that hemp is legal in all 50 states, farmers can mail their samples to labs in other States if they cannot find a viable alternative locally.

Colorado has several licensed labs that will accept samples mailed from anywhere in the U.S. It is also essential to understand your State’s requirements for THC testing. Some States test for “total THC”, which is Delta9 THC combined with converted THCA, and others test for only Delta9 THC. Also, understanding the testing method used by your State can help determine a testing partner. In Colorado, the Department of Agriculture uses Gas Chromatography (GC) to determine cannabinoid content. As a result, Foundation Seeds performs GC testing in-house and utilizes High-Performance Liquid Chromatography (HPLC) and Ultra Performance Liquid Chromatography (UPLC) via 3rd party laboratories for confirmation and verification of our in-house results.

What does this mean for you as a CBD hemp farmer? It means you can’t always tell a book by its cover. This makes 3rd party analytical testing paramount to ensuring a successful and compliant crop. We recommend that farmers begin cannabinoid testing once the plants have started flowering every 5-7 days throughout the flowering cycle until harvest. Advanced testing can save you money in avoiding non-compliant crop losses and provide you with valuable crop data to help make informed decisions for the next crop and offer it to a potential buyer or processing partners and commodity traders.

We test all our genetics before releasing and provide our customers with detailed CBD, CBG, and THC cannabinoid maturation curves to understand harvest timelines and cannabinoid content. Our founders bred and have been working with the leading hemp genetics on the market and producing feminized cannabis seeds since 2012.

Eric is the Director of Breeding and Genetics at Catalyst BC.  Article originally posted on the Fondation Seeds website.

Additional Resources

Consulting Services For Cannabis, Hemp, Psilocybin, and Natural Medicine

Testimonials and Public Relations

Latest Articles

  • Cannabis Dispensary Compliance: Training, Inventory & Profitability
    In today’s regulated cannabis market, cannabis dispensary compliance is not optional—it is the foundation of a sustainable and profitable retail business. Every dispensary, from boutique shops to multi-state operators, must follow strict dispensary regulatory compliance standards, maintain accurate cannabis inventory management systems, and invest in ongoing cannabis dispensary training programs. Without a compliance-first mindset, dispensaries risk fines, license suspensions, product recalls, or even permanent closure.
  • Beyond Compliance: Implementing a Cannabis Dispensary Secret Shopper Program
    As a cannabis retail owner, you operate in a high-stakes environment where federal prohibition meets state-regulated commerce. Your retail floor is not just a sales hub—it’s a constant target for mandatory inspection and the front line for brand differentiation. The most critical tool for navigating this complex reality is the professional, recurring Cannabis Secret Shopper program.
  • Architects of the Cannabis Industry: What Defines An Expert Canna Consultant?
    An expert Canna Consultant is the strategic architect and operational engineer of a cannabis venture. They are specialized cannabis industry consultants who translate ambiguous legislation into profitable business processes.
  • Seed-to-Sale and POS: The Essential Technology Stack for Cannabis Dispensary Compliance
    Opening a dispensary is one of the most exciting — and challenging — opportunities in today’s cannabis industry. With consumer demand rising, states continue to open limited licensing windows for new operators. The key to standing out is a strong, compliant, and well-prepared Cannabis Dispensary License application.
  • How Much Does It Cost to Open a Cannabis Dispensary in 2026?
    The allure of jumping into the legalized cannabis industry often paints a picture of quick riches and burgeoning demand, yet the reality of establishing a licensed cannabis dispensary is far more nuanced, capital-intensive, and fraught with unique financial challenges. For aspiring entrepreneurs and seasoned investors alike, understanding the true dispensary startup costs is the absolute bedrock of success.
  • Cannabis Dispensary Operations: How to Streamline for Profitability and Compliance
    Running a profitable retail cannabis operation depends on more than a great product mix — it requires disciplined cannabis dispensary operations that center around four pillars: robust cannabis dispensary compliance, precise cannabis inventory management, continuous cannabis dispensary training, and a relentless focus on cannabis retail profitability. Operators who treat these pillars as an integrated system reduce risk, increase margins, and build scalable businesses.

Explore Our Articles

Business Strategy cannabis applications Cannabis Bar Cannabis Business Optmization cannabis careers Cannabis Compliance Cannabis Consumption Cannabis Consumption Bar Cannabis Inventory Management Systems cannabis jobs Cannabis Legalization cannabis licensing Cannabis Lounge cannabis marketing Cannabis Operational Procedures cannabis outreach Cannabis Regulations Cannabis Security Cannabis Software Cannabis Startup Cannabis Supply Chain Cannabis Technology Colorado controlled environment agriculture Cultivation cultivation facility Dispensary Design facility design Financial Planning HVAC HVACD Kansas Legal Update Legislation Medical Cannabis Minnesota Natural Medicine Nebraska New Jersey New York Odor Control Oregon Psilocybin Psychedelics Recreational Cannabis

Scroll to Top