Quick answer: A Certificate of Analysis (COA) is a lab report showing what's actually in a CBD product. To read one, check five things:
- The batch number matches your product.
- The lab is independent and accredited.
- The tested CBD amount matches the label.
- THC is within the claimed limit (ND for zero-THC products).
- Any contaminant panels show a "Pass."
Here's how to find each one.
What is a CBD Certificate of Analysis?
A COA is a document issued by a testing laboratory after it analyzes a sample from a specific production batch. The CBD industry is lightly regulated at the federal level, so the COA is the main way a shopper can check a brand's claims about potency, THC content and purity. If a brand can't or won't show you one, treat that as a red flag.
Step 1: Check the header information
The top of a COA usually lists:
- Lab name and accreditation. Look for an independent, third-party lab, ideally one accredited to ISO/IEC 17025, the international standard for testing laboratories.
- Client name. This should be the brand, or the manufacturer that makes the product for the brand.
- Sample or batch ID. This is the most important match. The batch or lot number on the COA should be the same as the one printed on your product.
- Test date. A very old report may not reflect the product you're holding.
Step 2: Read the cannabinoid profile
This section shows how much of each cannabinoid the lab found. Results may appear as a percentage, mg/g (milligrams per gram) or mg per unit. Things to check:
- CBD amount vs. the label. If a salve says 2000mg, the tested CBD should land reasonably close to that number. Small variation is normal; large gaps are not.
- Other cannabinoids. Full- and broad-spectrum products will show compounds like CBG or CBN. A CBD isolate product should show CBD and little else.
Step 3: Find the THC lines
Look for several entries, not just one:
- Delta-9 THC, the compound associated with a high.
- THCa, a precursor that can convert to delta-9 THC when heated.
- Total THC, which combines the two. It's commonly calculated as delta-9 THC + (THCa × 0.877).
Total THC matters more than ever. A new federal hemp definition takes effect December 11, 2026, judging products by total THC and capping finished hemp products at 0.4 mg of total THC per container.
If a product is sold as zero THC, every THC line should read ND. More on what that means in What Does "Zero THC" CBD Mean?
Step 4: Understand ND, LOD and LOQ
- ND (non-detect): the compound wasn't found above the lab's detection threshold.
- LOD (limit of detection): the smallest amount the lab's method can detect.
- LOQ (limit of quantitation): the smallest amount the lab can measure with a reliable number. You may see "<LOQ," meaning a trace was detected but was too small to quantify precisely.
Step 5: Review the contaminant panels
A full-panel COA goes beyond potency to screen for things that shouldn't be in the product. Not every product is tested on every panel, but these are the common ones:
- Heavy metals: lead, arsenic, cadmium and mercury.
- Pesticides: residues from farming.
- Residual solvents: leftovers from extraction, such as ethanol, butane or hexane.
- Microbials: bacteria, yeast and mold.
- Mycotoxins: toxins produced by certain molds.
Each panel should show results under the allowable limit and a Pass.
Red flags on a COA
- No batch number, or one that doesn't match your product.
- The brand's own name listed as the testing lab (not independent).
- Tested CBD far below the label claim.
- A "zero THC" product showing a measurable THC number.
- A blurry image with no way to verify it with the lab. Many labs offer a QR code or online lookup.
Where to find Happy Planet CBD lab results
We source hemp from U.S. growers registered with their State Department of Agriculture and track every batch back to its farm. Our topicals use 98% CBD isolate with 0% THC. To see how we test and how to look up results for your product, read Is Happy Planet CBD Legit? How to Verify Our Lab Testing.
Shop our zero-THC topicals: CBD Salve, Cooling Face & Body Lotion and Twist-Up Stick.
Frequently Asked Questions
Should every CBD product have a COA?
Yes. A reputable brand should provide a current, batch-specific COA from an independent lab for every product it sells.
Why doesn't the tested CBD match the label exactly?
Natural products and lab methods both have some variation, so small differences are normal. A large shortfall suggests a quality-control problem.
What does "total THC" mean on a COA?
It combines delta-9 THC with THCa (adjusted for conversion). It gives a fuller picture of THC content than delta-9 alone, and it's the standard used in the new federal hemp definition.
Can I verify a COA is real?
Often, yes. Many labs let you confirm a report by QR code or by entering the sample ID on their website. You can also contact the lab directly.
These statements have not been evaluated by the Food and Drug Administration. Our products are not intended to diagnose, treat, cure, or prevent any disease.