How to Read a THCa Concentrate COA

A certificate of analysis (COA) is a laboratory report for a specific sample. For THCa concentrates, it can help you review the reported cannabinoid results and see which additional tests were performed. A COA is most useful when it matches the product and batch you are considering.

1. Match the report to the product

Start with the product name, sample or lot identifier, sample type, and report date. If the product listing provides a COA, check that the identifier and product description correspond to the item or batch being sold. A report for a different product or a different batch should not be treated as a report for the current listing.

2. Read the cannabinoid panel carefully

The cannabinoid panel may report THCa, delta-9 THC, CBD, and other cannabinoids, depending on the sample and the lab’s panel. Results can be shown as percentages by weight, milligrams per gram, or other units. Make sure you compare like units and distinguish a concentration percentage from the total amount in a package.

THCa and delta-9 THC are different entries on a lab report. Do not assume one number represents every cannabinoid or every possible measure of THC. Read the report’s labels, units, and notes.

3. Check which additional tests are included

Panels differ by laboratory, product type, and testing program. Depending on the report, additional analyses may cover pesticides, heavy metals, microbial contaminants, residual solvents, or other specified items. Look for the actual test names and results rather than assuming every COA includes every panel.

4. Review the lab and dates

Find the laboratory name, report or sample identifiers, issue date, and any accreditation or method information shown. These details help you understand who produced the report, when it was issued, and what methods or requirements the report identifies.

5. Understand what a COA can and cannot tell you

A COA reports findings for the particular sample and tests listed in the document. It does not automatically establish the composition of a different batch, and the absence of a test result does not mean the product passed that test. Read the full report, including qualifiers, notes, units, and any results marked not detected or below a stated limit.

Where to find testing information at Daily Hi

When a product listing includes batch-specific testing documentation, use that report to review the stated results for that release. Visit our Lab Results & Quality page for Daily Hi’s testing information, and browse the relevant Hash and Live Rosin collections. Availability and documentation can vary by product and batch.

For more context, read Hash vs. Live Rosin and our solventless concentrate formats guide.