The Document That Separates Legitimate Brands from Everyone Else
In an industry with minimal regulatory oversight, the Certificate of Analysis (COA) is the closest thing to a guarantee that a hemp product contains what it claims to contain — and nothing it shouldn't.
A COA is a document issued by an independent, accredited laboratory that has tested a specific batch of hemp product. It reports the actual measured concentrations of cannabinoids, terpenes, and potential contaminants — not what the brand claims, but what the lab found.
The problem is that most consumers don't know how to read a COA. And some brands count on that.
What a COA Should Include
A complete, trustworthy COA should include the following sections:
1. Laboratory identification and accreditation The lab should be identified by name, and its ISO 17025 accreditation status should be verifiable. ISO 17025 is the international standard for testing laboratory competence — it means the lab's methods have been independently validated and its results are reproducible. Any COA from a non-accredited lab should be treated with skepticism.
2. Sample identification The COA should clearly identify the specific batch being tested, including a batch number or lot number that matches the product you're holding. A COA without a batch number — or one that uses a generic product name without a specific batch identifier — cannot be verified as applicable to your specific product.
3. Cannabinoid potency panel This section reports the measured concentrations of cannabinoids in the sample, typically expressed as mg/g or as a percentage. Key cannabinoids to look for:
- CBD — should match the labeled amount within a reasonable tolerance (±10-15% is acceptable; larger discrepancies are a red flag)
- Total THC — must be ≤0.3% on a dry weight basis to comply with the 2018 Farm Bill
- CBDA, CBGA, CBG, CBN, CBC — presence of these minor cannabinoids indicates a full-spectrum extract; their absence suggests isolate or broad-spectrum
4. Terpene profile (for full-spectrum products) A terpene panel is not required but is a strong indicator of extract quality. Full-spectrum products from high-quality source material should show a robust terpene profile. A full-spectrum product with no detectable terpenes has likely been processed in a way that destroyed them.
5. Heavy metals panel Should test for at minimum: lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg). Results should be reported in parts per million (ppm) or parts per billion (ppb) and compared against action limits. The California Department of Public Health limits for hemp products are a useful reference: lead ≤0.5 ppm, cadmium ≤0.2 ppm, arsenic ≤1.5 ppm, mercury ≤1.5 ppm.
6. Pesticide panel Should test for a comprehensive panel of pesticide residues. The number of pesticides tested varies by lab — a more comprehensive panel (50+ compounds) provides greater assurance than a minimal panel. All results should be below action limits.
7. Microbial panel Should test for total aerobic count, total yeast and mold, E. coli, Salmonella, and ideally Aspergillus species. Microbial contamination is a particular concern for hemp products because hemp flower can harbor mold that concentrates during extraction.
8. Residual solvents (for solvent-extracted products) If the product was produced using ethanol, butane, propane, or other solvents, the COA should include a residual solvent panel confirming that solvent levels are below safety thresholds.
Red Flags to Watch For
No batch number. A COA without a specific batch number cannot be verified as applicable to the product you're buying. It may be a COA from a different batch — or a fabricated document.
COA older than 12 months. Cannabinoid content and contaminant levels can change over time. COAs should be current for the batch being sold.
Only cannabinoid testing, no contaminant testing. A COA that only reports cannabinoid potency and omits heavy metals, pesticides, and microbials is incomplete and should not be considered sufficient.
Lab not independently verifiable. If you can't find the lab on an accredited laboratory directory or verify its ISO 17025 status, treat the COA with caution.
CBD content significantly different from label. FDA testing has found products with CBD content ranging from 0% to 300% of the labeled amount. A discrepancy of more than 20% in either direction is a significant quality control failure.
Total THC above 0.3%. This is both a legal compliance issue and an indicator of poor quality control.
How to Verify a COA
Most legitimate labs provide a QR code or web link on their COAs that allows you to verify the document directly on the lab's website. If a brand's COA doesn't include a verification link, or if the link doesn't work, that's a red flag.
You can also search for the lab by name and contact them directly to verify that the COA on file matches the document you've been provided.
At Divine Earth Theory, our batch-level COAs are available for download and include full cannabinoid, terpene, heavy metal, pesticide, microbial, and residual solvent panels from an ISO 17025-accredited laboratory. We believe that transparency about what's in our products is not a differentiator — it's the minimum standard.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.