Buying CBD in the UK should be straightforward and transparent. A credible brand will publish a Certificate of Analysis (COA) for each batch so you can check what’s in the bottle before you buy. Swiss Peak Health is a British brand based in Liverpool, and our CBD oils and gummies are made in the UK with independent third‑party testing for every batch. This guide shows you exactly how to read a CBD lab report so you can choose confidently.
What is a CBD lab report (COA)?
A Certificate of Analysis is an independent laboratory report that verifies key details about a specific product batch. For CBD, that typically includes:
- Cannabinoid profile: The amounts of CBD and other cannabinoids, usually in mg/ml, mg/g or % by weight.
- THC result: Whether THC is detected; for products described as THC‑free this should read “ND” (not detected) within the lab’s detection limit.
- Safety screens: Results for heavy metals, pesticides, residual solvents and, where relevant, microbiology.
- Administrative details: Product name, batch/lot number, date of test, and the lab’s accreditation details.
In Great Britain, CBD foods and supplements are regulated as novel foods by the Food Standards Agency (FSA). Medical claims are regulated by the MHRA, and advertising follows ASA/CAP rules. A COA helps you confirm a product’s composition and safety; it is not a substitute for medical advice.
Step‑by‑step: how to verify a CBD lab report
- Find the right report: Look for a link or QR code on the product page or packaging. Choose the report that exactly matches your bottle’s batch number.
- Check the date: Reports should be recent and specific to your batch.
- Confirm the product details: The strength (for example 500mg, 3000mg, 6000mg) and format (oil or gummies) on the report should match the label.
- Match the cannabinoid numbers to the label claim: Use the quick calculations below to translate lab data into total mg per bottle and mg per serving.
- Review THC findings: For broad‑spectrum or isolate products described as THC‑free, expect “ND” (not detected) or a value below the lab’s stated LOD/LOQ.
- Scan the safety screens: Heavy metals, pesticides and residual solvents should be reported as “pass”, “compliant” or below stringent limits. If any result is unclear, ask the brand to explain it before you buy.
Translating lab data into real‑world strength
COAs often list CBD as a percentage or in mg per ml. Here’s how to make sense of it for a 30ml oil bottle:
- If the COA shows % CBD: Multiply % by bottle size (ml) and by 10 to get total mg. Example: 10% CBD in 30ml ≈ 10 × 30 × 10 = 3000mg total.
- If the COA shows mg/ml: Multiply by bottle size. Example: 100mg/ml × 30ml = 3000mg total.
- Estimating per‑drop amount: A 30ml bottle typically contains about 600 drops. Total mg ÷ 600 ≈ mg CBD per drop. For a 3000mg oil, that’s about 5mg per drop.
To compare strengths across oils, see 500mg, 1,500mg, 3,000mg or 6,000mg CBD Oil: What Do the Numbers Mean? and How to Compare CBD Strengths Properly.
THC results explained (and what “ND” really means)
UK CBD food supplements for everyday use are typically chosen with THC reported as “not detected”. On lab reports you’ll see terms such as LOD (limit of detection) and LOQ (limit of quantitation). “ND” means the lab could not detect THC above its LOD. This is how you verify a product that’s described as THC‑free.
If you prioritise THC‑free formulations, read How to Check Whether a CBD Product Is THC‑Free.
Full‑spectrum, broad‑spectrum or isolate: what to expect in the COA
- Full‑spectrum: CBD alongside minor cannabinoids (e.g., CBG, CBC) with THC recorded as ND or below the lab’s detection limit for UK‑compliant food supplements. Double‑check that CBD matches the label and that safety screens pass.
- Broad‑spectrum: CBD plus minor cannabinoids, with THC ND. Confirm the batch/date and that the THC line shows ND.
- Isolate: Predominantly CBD, with other cannabinoids ND. Expect very high CBD purity and contaminants recorded as ND/pass.
For a deeper primer on extract types, see Broad‑Spectrum, Full‑Spectrum and CBD Isolate Explained.
Safety testing: the non‑negotiables
Reputable UK brands publish safety data for each batch. When reading the COA, look for:
- Heavy metals: Lead, mercury, cadmium and arsenic below strict limits.
- Pesticides: A pass/ND result is expected.
- Residual solvents: Confirms safe extraction and purification.
- Microbiology (where reported): Confirms hygienic manufacture for food‑supplement use.
How this helps you choose the right Swiss Peak product
Once you’re confident reading a COA, you can select a product that fits your routine and budget—then confirm the batch report before you buy. Because Swiss Peak CBD is made in Britain and batch‑tested by independent labs, you can compare strengths and formats with clarity. If you prefer a gentle starting point, a lower strength such as 500mg CBD Oil keeps per‑drop maths straightforward. If flavour helps you stay consistent, choose a taste you’ll enjoy—such as Apple 1000mg CBD Oil—and match the flavour’s batch COA.
For a daily mid‑strength where the COA typically shows ~100mg/ml on a 30ml bottle, 3000mg CBD Oil is a practical benchmark to review. If you prefer fewer drops and clearer potency per ml, experienced users often compare higher‑strength reports such as 6000mg CBD Oil. For fewer re‑orders and one matching COA over a longer period, consider reviewing the 100ml report on 25,000mg CBD Oil.
If you’re undecided between oil and gummies, you can compare formats side‑by‑side via the 3,000mg CBD Oil or 3,200mg CBD Gummies promotion, then choose the routine you’ll actually keep. For broader format pros and cons, see CBD Oil vs Gummies: Which Format Suits Your Routine?.
Tip for value: orders over £50 qualify for free next‑day UK delivery when placed before the daily dispatch cut‑off. Buying a stronger bottle or pairing products can be more cost‑efficient once you’ve checked the COA for each item.
- CBD Oil 500mg | 30ml Starter Strength — A gentle, easy-to-calculate starting strength with a batch COA you can verify before buying.
- Apple CBD Oil 1000mg | 30ml — Apple-flavoured 1000mg oil for a tastier daily routine while checking the flavour’s batch COA.
- CBD Oil 3000mg | 30ml Mid-Strength — Mid-strength oil that typically shows ~100mg/ml on the COA, good for a daily routine.
- CBD Oil 6000mg | 30ml High Strength — High-strength oil for fewer drops per serving, with a batch COA to confirm potency.
- 25000mg CBD Oil | 100ml High Strength — Very large bottle for long-term value and a single COA to review for the whole supply.
- *Promotion* Choose a 3000mg CBD Oil or 3200mg CBD Gummies — I want a UK-made CBD product with a clear batch COA and straightforward strength I can verify.
How to spot red flags in a lab report
- No batch number or mismatched batch: The COA must match your product’s lot code.
- No dates or very old reports: You should see a recent test date.
- Missing safety tests: Cannabinoids alone aren’t enough—look for metals, pesticides and solvents data.
- Unclear THC result: If the COA doesn’t state ND or a clear measured value with LOD/LOQ, ask the brand for clarification.
- Inconsistent units: If numbers are shown in % but don’t reconcile to total mg on the label, query it before buying.
Which option is right for you?
- Lowest cost of entry: A 500mg bottle helps you learn the format and quickly match label to mg/ml on the COA.
- Balanced daily routine: A 3000mg oil typically shows ~100mg/ml, which makes drop calculations simple from the COA.
- Fewer drops, higher strength: 6000mg oils have higher potency per ml; the COA confirms concentration for smaller serving sizes.
- Bulk value, fewer re‑orders: A larger 100ml bottle means one COA to review for a longer supply and stronger £‑per‑mg value.
- Taste first: Flavoured 1000mg oils provide the same potency and safety data on the batch COA.
If you’re still choosing your format or strength, explore How to Choose a CBD Product in the UK and Beginner CBD Products vs High‑Strength Options.
Frequently Asked Questions
Where do I find the batch number to match my COA?
Check your CBD bottle, jar or outer carton for a lot/batch code (often near the barcode or base). Select the COA with the same code to ensure the report applies to your product.
What does “ND” mean on a CBD lab report?
“ND” stands for “not detected”. It means the lab did not detect that compound above its limit of detection. For products described as THC‑free, look for THC reported as ND, with the lab’s LOD/LOQ clearly stated.
How often are Swiss Peak CBD products tested?
Every batch is independently third‑party tested for cannabinoid content and safety. Always match the batch number on your product to the batch number on the COA.
Do I need different checks for oils vs gummies?
The essentials are the same—batch match, cannabinoid profile, THC ND, and safety screens. Oils typically list mg/ml; gummies list mg per piece. If you’re comparing formats, see CBD Oil vs Gummies: Which Format Suits Your Routine?.
Anything else to consider before buying?
Stick to UK‑made products with batch‑specific COAs, clear labels, and straightforward delivery terms. If you take medication, have a medical condition, are pregnant or breastfeeding, or are under 18, speak to a GP or pharmacist before using CBD.
Next steps
1) Choose your preferred strength and format, 2) open the batch‑specific COA, and 3) confirm potency, THC ND and safety passes. If you’d like a gentle starting point, review the COA on 500mg CBD Oil. If you want fewer drops, compare the COAs for 3000mg CBD Oil and 6000mg CBD Oil. For best value in a larger bottle, see 25,000mg CBD Oil. All are made in Britain and batch‑tested, with free next‑day UK delivery on qualifying orders.
