Glass tubes with CBD. Scientist mixing CBD oil with liquid. There is potted marijuana plant. Health concept.

How to pick a product: a guide to CBD lab testing

Glass tubes with CBD. Scientist mixing CBD oil with liquid. There is potted marijuana plant. Health concept.

For millennia, the hemp plant has served many different uses–from healing rituals to manufacturing ropes and biofuel. The plant’s most well-known association, however, remains the intoxicating drug marijuana, which derives its potency from the THC components of the female plant’s buds. However, THC is merely one of more than a hundred cannabinoids that naturally occur in hemp, one of which is Cannabidiol (CBD), ‘the wellness cannabinoid’. CBD is entirely safe, non-intoxicating, and comes with a number of therapeutic effects–at least, that’s what every company promises. But can they prove it?

The CBD market is young, blossoming–and wildly unregulated. At Goodbody, we are incredibly excited that the world is finally waking to the wonderful benefits of CBD. Much work still needs to be done, both in terms of testing and research, spreading awareness–as well as in certifying that products are up to the highest standards. The problem of inflated and deceptive labels, and even potentially dangerous ingredients, is real. Thankfully, so is the solution.
This article will provide you with a comprehensive guide to CBD lab testing: why it is so important, what it involves, and how to tell quality from fanciful CBD. Even when you get hold of a product’s Certificate Of Analysis (COA), reading it can be tricky. Do not worry, as we will also cover a simple way to make sense of these certifications. Finally, this article will illustrate the steps that Goodbody takes for ensuring quality control of its CBD, from manufacturing all the way to retail.

CBD market: in urgent need of ethical attention

While no-one has ever experienced a CBD overdose, it is common to feel overwhelmed by the amount of CBD products available. To make matters worse, many companies have sought to take advantage of CBD’s rising success, with little care for ethical practice and the health of customers.

The issue of mislabelled products is as old as it is pernicious. So-called ‘food fraud’ is commonly seen in products containing olive oil, saffron, and honey. A recent study, published in the Journal of Food Sciences, showed that 75% of the honey sampled by investigators contained so little pollen as to not even technically count as ‘honey’ under FDA regulations! The problem is no less prevalent in the world of wellness products. This is unfortunate, as unethical marketing risks undermining what valuable trust has been garnered through solid scientific work.

Back in 2017, medical researchers at the University of Pennsylvania analysed 84 CBD products from 31 different online companies. The results were staggering: more than 70% of products were either over- or under-labelled. With the majority of products misadvertising its ingredients, consumers are bound to get stuck, at best, with simple placebo effects, and at worst, with those very conditions that CBD could help with–including anxiety, respiratory inflammation, muscular pain, and epilepsy. Not to mention, companies are getting rich selling ‘snake oil’ while soiling CBD’s reputation.

In the UK, the situation is only slightly better. One source of evidence is a key 2019 study carried out by the Centre for Medicinal Cannabis (CMC), an independent cannabis-advocacy group. Of the 30 CBD products tested for contents and label accuracy, the study found 60% claimed a false CBD content. A solid 38% contained less than half of their alleged CBD amount, with one product–a 30ml bottle costing £90 that was purchased from a High Street pharmacy–containing no CBD at all. In turn, 45% of the products sampled revealed higher levels of THC than is allowed by law. One product had enough alcohol to effectively qualify as an alcoholic beverage, and several other products contained excessive amounts of solvents and heavy metals.

It would be wrong to blame the unregulated nature of the CBD market entirely on irresponsible companies’ profit motives. The sheer lack of legal clarity around CBD is bound to confuse manufacturers as much as consumers. As the CMC’s report states, “the industry has an obligation to behave responsibly around how it uses and promotes CBD,” just as “politicians and policy-makers must now approach the question of how to regulate CBD proportionately.”
We believe that the best way to ensure a safe future for CBD is to lead by example. Through our work, we hope to inspire every CBD company out there to ensure that all their products come with a certified guarantee for quality, contents, and effectiveness. The best way to do this is through laboratory testing.

Back to the Lab: what to test for, and how

CBD elements in Cannabis, hemp oil in a glass jar, Concept of herbal alternative medicine.

A product’s label can claim lots of things. As responsible consumers, it is our right to demand proof. On the other hand, we believe that a responsible company’s job is to volunteer proof on top of their words–especially when people’s health and wellbeing is concerned. For CBD companies with nothing to hide, the rule of thumb should be to work closely with a testing facility capable of objectively assessing a product. Tests may be conducted either by third-party laboratories, independent certifying bodies or by the company’s own accredited laboratories, provided trusting relationships are in place, and regulatory standards are met.

Here at Goodbody, we have built a strong alliance with PhytoVista Laboratories, a leading UK market leader in its own right. Since last year, PhytoVista has officially become a member of our Sativa Wellness Group family, helping us in our goal to successfully integrate testing and scientific research with manufacturing and retail.

This new partnership enables us to put analysis right where it belongs, namely at the heart of production. At the same time, PhytoVista’s state-of-the-art Quality Management System, which won the laboratories wide acclaim in the field of CBD testing, ensures a level of accuracy in line with both national, as well as international, standards.

So what exactly does lab testing involve? As may be expected, analysing CBD is a rather technical process. Scientists can run a number of different tests depending on the parameters. For example, testing for THC contents involves mixing small amounts of the product with a test liquid, then immersing it in a solvent, and finally spraying the dried solution with a dye that ‘colours’ every cannabinoid differently.

Checking the THC amounts in your CBD ensures that the product is legal, safe, and reliable. Since CBD comes from hemp, it is not rare for some products to contain trace amounts of THC. But for a CBD product to be deemed legal, this amount should be less than 0.2%. This percentile is so small, that a certified CBD product comes with zero risks of getting you high or intoxicated–or making you fail that drug test. The legal threshold is also very low for ‘THCA,’ an acid compound which turns into THC once decarboxylated, i.e. exposed to heat. A myriad of other cannabinoids may show up in a lab test, including CBG (Cannabigerol), CBN (Cannabinol), and the lesser-known CBC (Cannabichromene). These have all been associated with different therapeutic effects and can work in synergy with CBD.

As for the CBD contents themselves, their quantity will vary depending on the product. What matters in every case is that the label matches the stated ingredients. For example, our Goodbody CBD oils range from our ‘Low Strength’ drops, with 2.5% CBD per 10ml bottle, all the way to our ‘MAXPlus’ version, which comes with 20% CBD (2000mg CBD). Furthermore, all of our oils contain a unique blend of ‘broad-spectrum’ cannabinoids, ensuring delivery of their enhanced benefits–and no THC.

But cannabinoids are not the only things that a CBD product can be tested for. A full suite analysis will also screen for pesticides, unwanted contaminants, residual heavy metals, and mycotoxins. For a product to be safe, it should contain none of these residual ingredients. Further available measurements will check the amount and potency of terpenes–a class of natural compounds commonly found in plants and animals. While terpenes are rarely tested for–their effects being positive and their presence a plus–measuring the other parameters can be helpful.

Just as mercury can ‘bioaccumulate,’ or become concentrated in fish, residual substances in the soil can also concentrate in hemp. The key to eliminating any unwanted pollutants lies in the extraction process: solvent extraction is cost-effective but highly dangerous, while CO2 extraction is by far the safest, most advanced, and also the most expensive method. In between the two sits olive oil extraction, an old method of which the main downside is the highly perishable nature of the resulting products. No matter which method a manufacturer adopts, a comprehensive lab test will help ascertain the safety of the final product.

Certifying authenticity: the Certificate of Analysis (COA)

Medical records in file cabinet at doctor's office.

To avoid falling prey to inflated labels, it is good always to verify a product’s Certificate of Analysis (COA). The COA is what a lab test culminates in: the document which verifies a product’s physiochemical composition. Not only does the existence of this document confirm that the product has been tested, but the COA is also open to public scrutiny. This factor is key, as not every COA necessarily translates into a guarantee. Before learning how to read a COA, however, we have to first get hold of one.

Some companies post their COAs online, and you can find them through a quick Internet search. Other companies require you to contact them and request a COA directly. Do not feel shy about contacting a company: providing a COA is their responsibility. If certifications are unavailable, or a company fails to return your inquiries, it is probably best to steer well clear of that particular product or brand.

To make things easier, all of our Goodbody products come with a QR code that links the label directly to the relevant certificate. You can also find a list of our COAs side by side their respective product on our website. Our partnership with PhytoVista Labs means that our tests are regularly updated, with optimal turnaround times. Indeed, something to look out for in the COA is the date: a company should conduct regular tests and update its certificates accordingly. Where a COA is too dated, this could mean that recent tests have failed to provide positive results. In general, a test is considered valid for one to two years after issue.

No matter how readily available a COA might be, what counts in the end are the results and what they mean. Lab results get predictably tiresome to read, as all the acronyms and decimal places risk causing confusion, rather than clarifying a product’s quality. With just a few pointers, however, a product’s COA can become almost as intuitive to read as its front label. As an example, we will be running through one of our own certifications.

How to make sense of a Certificate of Analysis?

lab test certificate

The COA breaks down into several parts. First, is the Header. This should specify the product description, the name of the certifying body or laboratory, alongside its address and the date of certification.  

table showing cannabinoid profile

Next is the product’s Cannabinoid Profile, or in our example, the Advanced Cannabinoid Profile. As you can see, CBD is by far the most prevalent ingredient. Always ensure that the CBD content is not lower than what is claimed on the packaging.

You will also notice a range of cannabinoids marked as ND (Non-Detectable) because of their being below the LOD (Limit of Detection). Their presence would not necessarily pose any threat, however. For instance, research on CBDA (Cannabidiol acid) is associated with anti-nausea and anti-stress effects–among others.

Where the calibration of particular cannabinoids varies from product to product, depending on the type of CBD, the levels of THC should be as low as possible (and no higher than 0.2%). However, if you look at the Cannabinoid Profile in our example, you will see that there are almost as many different ‘THCs’ as there are acronyms starting with ‘CB.’ Why is that–and what are those odd ‘delta’ (Δ) signs preceding THC?

In brief, Δ9-THC is the most abundant cannabis constituent found in hemp. This is the tetrahydrocannabinol we usually refer to when we say ‘THC,’ and the one you especially want to look out for. Δ9-THC differs from Δ8-THC by a mere few atomic bonds, and both have psychotropic potency (though Δ8 less so than Δ9). Δ8-THC’s own therapeutic effects have started to attract attention thanks to recent scientific studies, such as this one, pointing once more to the wondrous, and still largely untapped potential of cannabinoids.

lab report details

The Foot section of the COA should bear the explicit approval of the certifying laboratory. In our case, you can also find the planned review date for the product’s certification, and a QR code linking you to PhytoVista Labs’ online resources.

Different COA documents might have a Body that specifies every other chemical component found, as well as the results of tests conducted on top of CBD and THC. All of these different components, compounds, and chemicals can be difficult to remember or make sense of. Our Cannabinoids Pocket Dictionary should help with this task, by combining all major CBD and related acronyms in one place.

Cannabinoids Pocket Dictionary

shabby old book and a cup of tea
CBC (Cannabichromene): one of the lesser-known cannabinoids. It is believed to be non-psychoactive and help provide cannabis with its antiviral, analgesic, and anti-inflammatory qualities.CBCA (Cannabichromene acid): a precursor to the CBC biosynthesis.CBD (Cannabidiol): CBD is the hero in this story. This key compound is best known for its calming and relaxing effects, with growing research and testimonials pointing to CBD as an effective and natural reliever of chronic pain, anxiety, inflammation, and sleep problems. By working in harmony with the cannabinoids that naturally inhabit our bodies, CBD can help regulate a number of bodily, mental, and behavioural functions. For these reasons, CBD is known as the ‘wellness cannabinoid.’ On top of all this, CBD has been consistently shown to help treat childhood epilepsy syndrome. Research in this field is fairly new and very much ongoing, and it is important not to hail CBD as a panacea treatment for thorny medical conditions. Part of the problem is that CBD is mostly available in unregulated forms, which is why lab certifications are so essential.CBDA (Cannabidiol acid): a ‘raw’ compound (unheated, uncooked) found in hemp’s resinous glands. Studies have shown that unlike other cannabinoids, CBDA works independently of the endocannabinoid system, but can help alleviate nausea.CBG (Cannabigerol): the non-acidic form of CBGA, CBG has been found to have a number of medicinal benefits, such as treating inflammatory bowel disease and slowing the proliferation of cancer cells.CBGA (Cannabigerolic acid): the ‘grandfather’ compound of all cannabinoids. CBGA helps plant growth and triggers the production of three major cannabinoids, which ultimately result in THC and CBD. Among other things, CBGA has been shown to help inhibit the enzyme aldose reductases, which contributes to the oxidative stress leading to heart problems.CBN (Cannabinol): a non-toxic, mildly psychoactive compound that typically forms in older marijuana. CBN has been shown to help with a number of problems, such as promoting sleep, bone cell growth, and reducing pain.CBDV (Cannabivarin): shares structural similarities with CBD, and is equally non-toxic. Its benefits seem to lie mostly in reducing or preventing seizures.CBDVA (Cannabivarin acid): an acidic version of CBDV with an equal amount of potential positive effects.Δ9-THC (Tetrahydrocannabinol): the primary form of THC found in cannabis. This compound takes the form of a temperature-sensitive, resinous substance, ranging from smooth to viscous. The consumption of THC has been attributed to a range of positive physical, psychological, and emotional effects. Though the plants first reported uses date back to 2,6000 BC in China, the pharmacological study of THC began only in the late 60s and is still very much ongoing. Combined with CBD, THC is now an active ingredient in pharmaceutical drugs used to relieve painful muscle spasms in multiple sclerosis, as well as in drugs that relieve chemotherapy-induced sickness. Because of other effects related to the consumption of cannabis, such as the risk of developing substance dependency and lung problems from smoking, THC is the main reason why cannabis is a controlled substance in many countries around the world.Δ8-THC: an analogue of THC but with lower psychotropic potency, known to lead to loss of human appetite. Δ8-THC also displays a range of antiemetic and anxiolytic properties, among others.THCA: a non-psychoactive compound that turns into THC during decarboxylation, a technical term for when hemp heats up. THCA has a range of anti-inflammatory, antiemetic, and neuroprotective qualities.THCV (Tetrahydrocannabivarin): THCV is a homologue of THC, but lacks psychoactive effects. Additionally, THCV is known to reduce appetite and increase satiety, making it a clinically useful remedy against weight loss.THCVA (Tetrahydrocannabivarin acid): a non-psychoactive predecessor compound of THCV, currently being studied for potential benefits on bodily and psychological functions.

 The Goodbody Solution

Great uncertainty surrounds the production and regulation of CBD products at present. The complex nature of CBD and hemp itself demands that excellent care is taken in producing, extracting, and processing CBD. While regulations are still being worked out, companies should do their utmost to verify quality at all levels of their business. At the same time, more scientific research is needed to further penetrate the mysteries of these wonderful substances, and harness their potential for wellbeing and health. Testing products is already a fundamental step forward: even when products get lab certified, however, making sense of the certifications is not always straightforward. We hope that this guide can help you navigate the complicated environment of CBD, and learn how to pick a quality product.Our Goodbody solution to the difficulties of the CBD market is to work together with testing, researching, and policy-making bodies, and cultivate an ongoing dialogue across these different aspects of the CBD world. Doing so not only guarantees our products’ top quality but sets new standards for the entire CBD industry. On top of our union with PhytoVista Laboratories, Goodbody is helping shape the future of CBD through our research-oriented collaboration with King’s College London, where our resources go towards scientifically investigating the ever-fascinating benefits of CBD. Another partnership which we are incredibly proud of is with the Centre for Medicinal Cannabis (CMC), a hard-won connection that makes us the first UK listed Medicinal Cannabis Company. CMC works with regulatory bodies, putting pressure on companies and the government alike to construct stricter industry guidelines. Together, we are endeavouring to make CBD production as transparent and ethical as possible. The goal is simple: to ensure consumers know what they are getting, and grow a positive future for CBD.

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