A Certificate of Analysis, often called a COA, is a laboratory report connected to a tested product or sample. It can help you review cannabinoid content and any additional screening information provided for that batch. A COA is also one of the clearest ways a brand can show its work — it turns a label claim into something you can actually verify.
TL;DR
- Match the COA to the brand, product, batch or lot number, and report date.
- Check cannabinoid results beside the package because a lab percentage is not always the amount per serving.
- Look for the specific contaminant panels performed rather than assuming every report includes every test.
- Third-party, accredited labs carry more weight than results a brand generates in-house.
- Use the COA with the current product listing, ingredients, selected variant, and directions.
Why the COA matters
Hemp and cannabinoid products aren't standardized the way, say, over-the-counter medication is. There's no single regulator confirming every bottle's contents before it reaches a shelf. The COA is the substitute for that: a third-party lab tests an actual sample and reports what it finds. A brand that publishes current, matching COAs for its products is showing you the underlying data instead of asking you to take a label claim on faith.
This matters most in two situations: confirming that a product's potency roughly matches what the package claims, and confirming what else is (or isn't) in the product beyond the cannabinoids themselves.
Match the report to the product
Start by comparing the brand, product name, batch or lot number, and report date. A generic report or a report for a different batch should not replace the information for the item you are considering.
Read the cannabinoid results
COAs may list cannabinoids as a percentage, an amount by weight, or another laboratory unit. Read the report beside the current product page and package. Laboratory results describe the tested sample; they are not always the same as the amount in one serving.
A worked example
Say a flower product's COA lists THCa: 22.5% and Delta-9 THC: 0.8%. The THCa figure describes the raw, unheated compound — it isn't the intoxicating form until heat converts it. The Delta-9 THC figure is what's already present in that active, intoxicating form before any heating happens. Many reports also list a Total THC figure, which accounts for the fact that most THCa converts to THC when the product is smoked or vaped — that combined number is usually a better estimate of potency after use than either figure alone.
For an edible, the math works differently: a report might read 10 mg CBD per gummy against a package listing 400 mg total. Divide the total by the piece count to sanity-check the per-serving number the label claims.
Review the testing categories
Depending on the product and laboratory, a report may include screening for residual solvents, heavy metals, pesticides, microbes, or other categories. Not every COA includes every test, so check the section headings rather than assuming a complete panel was performed. A cannabinoid-only report tells you potency; it says nothing about contaminants unless those panels are actually listed.
Third-party labs vs. in-house testing
Not all testing carries the same weight. A report from an independent, accredited third-party laboratory is generally considered more reliable than results a company generates internally, since the lab has no direct financial stake in the outcome. Look for the testing lab's name printed on the report, and treat a report with no named lab, or one that only shows an internal document, with more caution.
Understand common result terms
- ND commonly means not detected at the laboratory's reporting threshold.
- LOQ refers to the limit of quantitation used by the laboratory.
- Pass or fail should be read with the test method and stated limit.
Layouts and abbreviations vary. Use the notes printed on the report when interpreting a result.
Common mistakes shoppers make
- Assuming any COA on the site applies to any product. A report has to match the specific batch or lot on the package you're holding — not just the product name.
- Reading only the front-page cannabinoid number. A high headline potency figure says nothing about contaminant screening unless you check further into the report.
- Confusing THCa with Total THC. These are different numbers, and using the wrong one under- or overestimates potency after heating.
- Treating an old report as current. Formulas and batches change; check the report date against the batch you're actually buying.
Use the COA with the current listing
A lab report is one part of the shopping process. Confirm the selected variant, package size, ingredients, directions, and current availability on the live product page.
Visit Pure Shaka Lab Reports, browse current products, or ask the team at a Pure Shaka store for help locating available documentation.
Frequently asked questions
What does COA mean?
COA means Certificate of Analysis. It is a laboratory report associated with a tested product or sample.
How do I know a lab report matches my product?
Compare the brand, product name, batch or lot number, and report date with the package or current product listing.
What's the difference between THCa and Total THC on a COA?
THCa is the raw, non-intoxicating compound found in unheated flower. Total THC accounts for the conversion that happens when THCa is heated, so it's typically a closer estimate of potency after smoking or vaping than the THCa or Delta-9 THC figures alone.
Does a third-party lab report matter more than in-house testing?
Generally, yes. An independent, accredited lab has no financial stake in the result, which is why third-party COAs are considered more reliable than results a brand generates internally.
Where can I find Pure Shaka lab reports?
Visit the Pure Shaka Lab Reports page. The team can help locate available information for a specific product.