Full-Spectrum vs Broad-Spectrum vs Isolate
Every hemp shopper meets the same three words on a label, and they answer a single question: what was left in the extract. Full-spectrum keeps all of the hemp plant's naturally occurring cannabinoids and terpenes, trace THC included (≤0.3% Δ⁹-THC in US hemp). Broad-spectrum keeps a range of compounds and takes the THC out. Isolate is one purified cannabinoid, alone. What sells the difference is the "entourage effect", the claim that whole-plant blends outperform isolate, and that is still an unproven hypothesis. Established
What each format contains, including the trace THC in full-spectrum, is verified and graded; effect claims, the entourage effect among them, belong to others and appear with their limits. Grades run the six-rung evidence ladder, and the chips link to /evidence. Not medical or legal advice; the full disclaimer sits at the foot of the page.
At a glance
| Full-spectrum | Broad-spectrum | Isolate | |
|---|---|---|---|
| What's in it | Full-spectrumEvery naturally occurring cannabinoid plus terpenes | Broad-spectrumSeveral cannabinoids and terpenes, with the THC removed | IsolateA single purified cannabinoid, one only |
| THC content | Full-spectrumTrace THC, ≤0.3% Δ⁹-THC (US hemp) | Broad-spectrumTHC removed, with "non-detect" as the target | IsolateNone |
| "Entourage" potential (as claimed in marketing) | Full-spectrumHighest, per marketing · Emerging/Hypothesized | Broad-spectrumPartial, per marketing · Emerging/Hypothesized | IsolateNone; it is a single compound |
| Main trade-off | Full-spectrumContains THC, which raises drug-test and legal questions | Broad-spectrumRemoving THC can change the profile, and "non-detect" is not a promise of zero | IsolatePure and THC-free, without any whole-plant interplay |
| Identity of the format | Full-spectrumEstablished | Broad-spectrumEstablished | IsolateEstablished |
What's actually established
- The definitions. The vocabulary is the settled part. Full-spectrum means all of the hemp plant's naturally occurring cannabinoids and terpenes, trace THC included; broad-spectrum is that profile minus the THC; and isolate is a single purified cannabinoid, CBG or CBD for example, with everything else stripped out. Established
- Trace THC in full-spectrum. The THC in a full-spectrum bottle is small and still consequential. The US cap is ≤0.3% Δ⁹-THC by dry weight, usually too little to intoxicate and still enough to matter for a drug test or in a stricter jurisdiction. Established
- The entourage effect remains a hypothesis. Which brings us to the idea that sells the whole category. Marketing asserts it often: hemp's cannabinoids and terpenes working better together than one isolated compound does. Researchers are actively studying it, and controlled human studies have not established it, so a label or ad that presents it as a proven benefit is running ahead of the evidence. Emerging/Hypothesized
- "THC-removed" describes a target. On the removal side, the language is aspirational. Broad-spectrum processing aims for non-detectable THC and isolate aims for a single compound, yet "non-detect" is not the same as absolute zero and residual traces can remain. The batch-specific third-party certificate of analysis (COA) is where composition gets verified. Established (removal aim) / caution
- No format has an established human health benefit. Whatever the spectrum, effect and benefit claims come from third parties and carry a grade and a hedge. CBG in particular acts on α₂-adrenoceptors, which help regulate blood pressure (Cascio 2010); anyone taking cardiovascular medication should be cautious and consult a clinician. Low
- Legality (general, dated; not legal advice). Then there is the law. Under the 2018 Farm Bill, hemp with ≤0.3% Δ⁹-THC is generally federally legal in the US, yet the trace THC in full-spectrum products and rules that vary by state can still limit where and how a product is sold or used. Check locally. [Legal snapshot · not legal advice]
Common questions
What's the difference between full-spectrum, broad-spectrum, and isolate?
They differ in what the extract contains, and the gap goes beyond strength. Full-spectrum keeps all of hemp's naturally occurring cannabinoids and terpenes, trace THC included (≤0.3% Δ⁹-THC). Broad-spectrum keeps a range of compounds with the THC taken out, while isolate is a single purified cannabinoid, CBG or CBD for example, with everything else removed. Established
What is the entourage effect — is it real?
It's a hypothesis that controlled human studies have not established. The idea is that hemp's cannabinoids and terpenes work better together than any single isolated compound. Product marketing leans on it hard while researchers are still investigating, and until they report back the fair way to present it is as an open question. Not medical advice. Emerging/Hypothesized
Does full-spectrum contain THC?
Yes, by definition. US full-spectrum hemp products keep the plant's trace THC, capped at ≤0.3% Δ⁹-THC by dry weight. At that level most users stay sober, but a drug test or a stricter jurisdiction may still take an interest. Broad-spectrum and isolate are made to remove it, and the certificate of analysis shows the actual amount. Established
Is broad-spectrum THC-free — will it pass a drug test?
Not reliably. "THC-removed" and "non-detect" describe a manufacturing target rather than a guarantee of absolute zero, and residual traces can remain. Drug tests are sensitive, which puts a test-safe promise beyond any seller's reach. The check is a recent, batch-specific third-party certificate of analysis, and caution still applies if testing matters. Low
Is isolate less effective than full-spectrum?
Nobody has shown that it is. The question is the entourage claim in another coat, and that claim is not established. Isolate delivers one purified cannabinoid on its own, while full-spectrum supplies many compounds plus trace THC, and whether the blend beats the single compound remains an unproven hypothesis: promoted in marketing, unconfirmed in controlled human studies. Not medical advice. Hypothesized
Which spectrum should I choose?
That depends on what matters to you; this is not medical advice. If avoiding THC comes first, for drug testing, sensitivity or local law, broad-spectrum or isolate may lower the risk, while full-spectrum keeps the whole-plant profile that some users prefer. Whichever you pick, buy COA-verified products, and if you take cardiovascular medication, heed CBG's α₂ blood-pressure caution (Cascio 2010). Low
Informational only — not our claims, and not advice. The statements on this page about potential effects, benefits, or uses reflect claims made by third parties (manufacturers, media, traditional use, or preliminary research) and are presented for educational and informational purposes only. CBG Atlas does not make, adopt, endorse, or affirm these claims, and does not represent them as fact. These statements have not been evaluated by the Food and Drug Administration (or any regulator) and are not intended to diagnose, treat, cure, or prevent any disease. Nothing here is medical, legal, or professional advice; cannabinoid effects, safety, and legal status vary by person, product, and jurisdiction and can change over time. Consult a qualified professional before making any health or purchasing decision. Where we can, we show how strong the evidence is and cite the source; where evidence is thin or absent, we say so. Peregrine Biopharma funds the platform and holds no editorial authority.
The six rungs, and the words each one permits
- grade: Established
- Settled science — replicated human data, or biochemistry that is not in dispute. “is shown to”
- grade: Demonstrated
- Shown reproducibly in controlled experiments — typically laboratory (in-vitro) work. “has been shown to”
- grade: Emerging
- An early signal — preclinical (animal) work, or human evidence too limited to settle the question. “may · early evidence suggests”
- grade: Low
- Limited and low-confidence — sparse, indirect, or single-source data. “limited evidence · unclear”
- grade: Hypothesized
- Proposed and plausible — but not yet shown. “proposed mechanism”
- grade: Not supported
- Tested, and the evidence does NOT support it. This is a finding against the claim — not an absence of evidence. “evidence does not support”
- Catalogue in progress
- Not a rung: our registry holds nothing graded on the question yet. Absence is not evidence against.
A grade rates the support for a claim across the literature, never a single study. How we grade evidence.
Before you act on what you have read
Informational only, not medical advice. CBG Atlas is a scientific reference. Nothing here diagnoses, treats, cures or prevents any disease. Every claim on the page carries the grade of the evidence behind it, and the grade sets the words the claim may use. How we grade evidence.
Each grade rates the support for a claim across the literature. It does not rate any single study. An effect in cells may never show up in people. The grades cover the studies checked up to 9 August 2026. This page is for information and is not medical advice.
Cardiovascular note. CBG is a potent α2-adrenoceptor agonist in vitro, and α2 agonism can lower blood pressure. Anyone taking blood-pressure or other cardiovascular medication should consult a clinician before use. This is educational information, not medical advice.
Funding and independence. Peregrine Biopharma funds the platform and holds no editorial authority.
Report a safety event →Keep exploring
More comparisons