If you’re a consumer, learning how to read a cannabis COA accurately will help you make informed decisions regarding which cannabis products are safe and ideal for you. Since cannabis is an agricultural product, COA testing for contaminants is essential to determine product safety and any variance between batches. Furthermore, science is beginning to understand that cannabis is way more nuanced than its THC percentages, meaning that educating yourself on its many plant compounds or phytochemicals will help you find the best products for your personal needs.
What is a Certificate of Analysis (COA)?
COA = Certificate of Analysis.
Manufacturers use COAs to verify that their products conform to universal safety and quality standards. To create a COA, labs analyze products to measure phytonutrients and ensure safety standards are being met accurately.
Why Cannabis Lab Tests are Important
Testing cannabis products is extremely important for the safety of the consumer at every stage of production. Much like foods and other products meant for human consumption, standards are put in place to ensure that harmful microbes, pesticides, or derivative chemicals do not taint products. Cannabis and its many compounds are not FDA-approved, meaning exhaustive regulations surrounding cannabis are left up to individual states or manufacturers themselves. Companies that prioritize transparency will share their cannabis COAs with their consumers.
Aside from safety measures, COAs list the most abundant compounds in any product. Suppose you are buying whole cannabis flower, for example, by looking at a COA. In that case, you will see the percentages of each primary cannabinoid, such as THC or CBD, and any minor cannabinoids or terpenes. Each of these compounds contributes to the product’s effects on the body. By reading COAs and noting which products work best for you, you can make more informed decisions and predict how a product may make you feel before committing to a purchase.
How to Read a Cannabis COA Test
Take a look at the sample information provided on the COA. There you will find the strain information, in this case, we’re looking at Marshmallow OG 4.
You’re new to shopping at dispensaries and notice that some of your products’ labels contain COA information. Your product’s COA, or Certificate of Analysis, lists a variety of cannabinoids that you’re not familiar with. You try reading through the information, but you’re a tad overwhelmed. You think to yourself, “What is cannabigerol or cannabidiol?”
In the box on the right, we see that this batch was tested for various contaminants to ensure it is clean and safe for consumption. Primary contaminant tests include:
- Microbials: These are microscopic living things that exist everywhere. Some of them are pathogens, such as bacterias, viruses, and fungi responsible for disease.
- Mycotoxins: Secondary metabolites found in fungi. Due to their pharmacological uses, some are used to create antibiotics, while others are responsible for disease or even death in humans and animals.
- Heavy Metals: Toxic metals such as arsenic, mercury, lead, chromium, cadmium, and more can cause serious illness in humans and animals.
- Pesticides: Chemicals used in soil and the growing process that can contaminate vegetation, like cannabis and hemp.
A page later on in this COA report also has a more in-depth look at the various contaminants tested for this product:
The box below shows the panel of cannabinoids present in Marshmallow OG 4. Cannabinoids are phytochemicals present in the cannabis plant that each possess individual properties. Each cannabinoid is listed, its percentage by weight and its respective mg.
Acidic Precursors
As you look down the list of cannabinoids, you will find the acidic forms (CBDA, CBGA, etc.) of these compounds indicated. For example, the acidic precursor to THC is THCa. When a product like whole flower is decarboxylated or heated, THCa turns into THC, the cannabinoid responsible for the heady or euphoric effects most commonly associated with the “high” of cannabis.
We can see in the COA of Marshmallow OG 4 that this batch contains 23.5% THCa. We also see minute amounts of CBDa and CBG/CBGa. From this information, we can make informed assumptions about how this strain may make us feel, as some people enjoy the higher THC cannabis, while others enjoy the effects felt from lower THC cannabis.
COAs also typically include tests that measure a product’s type and concentration of terpenes. While terpenes are believed to influence the effects of cannabis, more research is needed to fully understand how they interact with cannabinoids and other compounds to impact the overall experience.
If you’re interested in learning more about how to assess cannabis COAs, it would be wise to research individual cannabinoids, as well as terpenes and their associated effects. This may help give you a better idea of which products you want to try on your next dispensary visit.
Where to Find a Cannabis COA Test
Nowadays, many brands are making their cannabis COAs accessible to the public. You can often find COAs on labels or labels that feature web addresses to a COA or easy, scannable QR codes. Another way to learn more about your chosen product’s testing COA is to speak with your budtender. Budtenders can review the cannabis COA with you and answer any questions you may have about its result. Budtenders are our greatest resources at our local dispensaries, so tap into their knowledge base when shopping.
At Bud’s Goods, we prioritize safety and transparency. Speak with any of our budtenders about our product COAs today.
