Full-spectrum, broad-spectrum, isolate: what the labels actually mean

Three words show up on most CBD product labels in Canada: full-spectrum, broad-spectrum, and isolate. They describe how the extract was processed and what other compounds from the cannabis plant remain in the finished product. They are not interchangeable, and the difference is visible on a Certificate of Analysis (COA).

This article explains what each label is required to mean, what to look for on a COA to verify the claim, and how the three categories show up across the Honest Botanicals catalogue. We do not say which one is “best” — that is a question of preference, dose, and what your physician (if you have one involved) advises.

Full-spectrum

A full-spectrum extract retains the complete cannabinoid and terpene profile of the source plant, minus the solvent used in extraction. That includes:

• CBD (cannabidiol), the dominant cannabinoid in hemp-derived varieties.
• Trace THC. By Canadian regulation, finished consumer CBD products must contain no more than 1000 mg of total THC per package — and the per-mL amount in a full-spectrum oil is typically a fraction of a milligram.
• Minor cannabinoids — CBG, CBN, CBC, and others — in concentrations measured in milligrams (or fractions of milligrams) per mL.
• Terpenes — the aromatic compounds that distinguish one cannabis cultivar from another.

On a COA, a full-spectrum product will show measurable concentrations across multiple cannabinoids, not just CBD. The HPLC potency table is the place to look. If the only cannabinoid above the limit of detection (LOD) is CBD, the product is functionally an isolate, regardless of what the front label says.

Examples in the Honest Botanicals catalogue: Full Spectrum CBD Oil (1000 mg total CBD per 30 mL bottle, also containing measurable CBG, CBN, and CBC), Super Spectrum Multi-Cannabinoid Oil (CBD plus elevated levels of CBG, CBN, and CBC).

Broad-spectrum

A broad-spectrum extract is processed to retain the minor cannabinoids and terpenes of the full plant, but with the THC removed (or reduced to undetectable levels). The processing step is typically a chromatographic separation that pulls Δ9-THC out of the extract while leaving CBD, CBG, CBN, and other cannabinoids in place.

On a COA, a broad-spectrum product will show measurable concentrations of multiple cannabinoids but THC reported as below LOD (or with a numerical limit, often ≤0.01% w/w). The “below LOD” notation is the verification — without it, you are taking the brand’s word for the broad-spectrum claim.

Note: Canadian licensed processors are not always permitted to label a product “broad-spectrum” in marketing copy, even when the extract meets the chemistry definition. Health Canada’s rules on cannabis labelling restrict descriptive language to specific approved phrases. The product description, the COA, and the producer’s licence number are your three sources of truth, in that order.

Isolate

A CBD isolate is purified CBD — typically 99%+ crystalline or powdered cannabidiol — with everything else removed. No other cannabinoids, no terpenes, no plant matter. The extract has been stripped down to a single molecule.

An isolate is the right starting point for someone who wants to use CBD in a cooking application (it dissolves into a fat carrier without changing flavour), or for a pet product where minor-cannabinoid exposure is a concern, or for any application where the formulator wants to control the cannabinoid mix exactly rather than inheriting the source plant’s profile.

On a COA, an isolate product will show CBD as the only cannabinoid above LOD, and the CBD concentration will be very high relative to total mass (often 99%+ on a starting-material COA, somewhat lower in a finished product where the isolate has been suspended in a carrier oil).

Examples in the Honest Botanicals catalogue: CBD Isolate Powder (crystalline cannabidiol, sold as a starting material for formulators).

How to verify the claim on a COA

Every CBD product sold by a federally licensed Canadian processor must have a Certificate of Analysis available. Honest Botanicals links the COA on every product page. To verify a spectrum claim:

1. Find the cannabinoid profile / potency table. Accredited Canadian labs use HPLC (high-performance liquid chromatography) to measure cannabinoid content. The table will list each cannabinoid by its abbreviation (CBD, CBDA, THC, THCA, CBG, CBGA, CBN, CBC) with a concentration in mg/g, mg/mL, or % w/w.
2. Look for “below LOD.” LOD is the limit of detection — the smallest concentration the instrument can reliably distinguish from zero. A “below LOD” entry means the cannabinoid is either absent or present at a concentration too small for the instrument to confirm.
3. Check the date and lot number. A COA applies to a specific lot of product. The lot number on the bottle should match the lot number on the COA. If the dates are years apart, the COA may not reflect the current product.

The label says one thing, the COA says another. Now what?

Trust the COA. It is the document with named lab, named accreditation (look for ISO 17025), instrument output, and a signature. Marketing copy on a product page or label is descriptive — the COA is evidence.

If the label claims “full-spectrum” and the COA shows CBD as the only cannabinoid above LOD, the product is mislabelled. Contact the seller and request clarification. A legitimate Canadian licensed processor will respond with the correct lot’s COA or acknowledge the labelling error.

Which spectrum should I pick?

This depends on what you want from the product, what your physician (or veterinarian, for a pet product) has advised, and your sensitivity to trace THC. We do not give medical advice. We list the spectrum, the cannabinoid profile, the producer, and the COA on every product page so you can match them to your own decision.

If you have specific questions about a particular product’s profile, the COA on its product page will answer most of them. If you have questions the COA does not answer, email us at hello@honestbotanicals.co with the product’s lot number.