When I read "third-party lab tested" on a bottle, I want to open the report. Who tested it? Which sample did they receive? What did they measure?
I'm Pedro Luz, co-founder of Kava Moon. We publish our independent and supplier reports, and they have limits as well as useful results. This guide explains how to read a kava certificate of analysis without treating it as a promise about every bottle a company sells.
Start with the sample, date and tests
A certificate of analysis, usually shortened to COA, records results for a submitted sample. It may cover identity, potency or contaminants. Don't assume it covers all three.
Check the sample or lot identifier first. Then look at the test date, the laboratory and the actual results. If you can't connect the report to the product you're buying, ask the seller what it represents.
What a kava COA tells you
Kava is agricultural material. Harvests, plant parts, preparation and storage can change the finished product. A report from one sample cannot establish that every later batch has the same composition.
There is also a difference between testing an ingredient and testing a finished drink. A supplier's extract report describes that extract. It does not automatically describe the bottled beverage after dilution, mixing and manufacture.
A report with a clear sample identifier can still be useful when it isn't matched to the lot on your bottle. It answers a narrower question: what was found in the sample tested on that date?
Why testing matters for kava
Kava products have been associated with rare serious liver injuries. The early European reports often involved concentrated supplement extracts, including products made using alcohol or acetone. Researchers have examined unsuitable plant material, extraction methods, contamination and other medicines as possible contributors. No single explanation accounts for every case.
The LiverTox review describes those uncertainties. Water-based products have also appeared in case reports, so "water extracted" should not be read as "risk-free."
Testing helps answer specific questions about identity and composition. It cannot establish that a drink is suitable for every person or prevent every possible adverse reaction.
A noble label needs supporting information
Noble and tudei kava differ in their cultivar backgrounds and chemical profiles. Our noble versus tudei guide explains the terms.
Kavalactone and flavokavain measurements can help characterize a sample. A validated analytical method can measure the six main kavalactones and three flavokavains separately. That is more informative than a single total.
But one chemotype or ratio is not a complete cultivar identification. Read the chemical data alongside the supplier's identity, origin and cultivar records. If a report doesn't include flavokavains, it doesn't establish their levels.
How to read the report
1. Identify the sample and the laboratory
Look for the lab name, sample description, identifier, received date and report date. Is the sample a root powder, an extract or a finished drink? Is there a lot number you can match to the product?
Keep the full report. Cropped screenshots may omit the method, units, qualifications or reporting limits that explain a result.
2. Check what "identity" means on this report
A product description is not necessarily an identity test. A lab may repeat the name supplied by its client without independently verifying the species or plant part. Look for an actual test method and result before assuming the report confirms Piper methysticum root.
3. Read the kavalactone units
Potency can be reported as a percentage, milligrams per gram, milligrams per milliliter or an amount per serving. Compare like with like. An extract's percentage is not the concentration of the finished drink.
The six main kavalactones use a fixed numbering system: 1 is desmethoxyyangonin, 2 dihydrokavain, 3 yangonin, 4 kavain, 5 dihydromethysticin and 6 methysticin. Our kavalactone guide explains those names and measurements.
4. Understand the chemotype
Rank those six by their measured abundance and you get a six-digit chemotype. A code starting with 4 means kavain was the largest measurement. It does not mean the product received a quality score of four.
The code gives relative order. You still need the individual concentrations and total to understand the sample. It cannot predict exactly how a serving will feel.
5. Look for flavokavains
These are different compounds from kavalactones. A panel may measure flavokavains A, B and C. Check the method, units and reporting limits. A missing panel is missing information, not a result of zero.
6. Read the metals and microbial panels separately
A metals panel may include lead, arsenic, cadmium and mercury. Microbial testing may include bacterial counts, yeast and mold, and named organisms such as E. coli or Salmonella.
Check whether the report gives actual measurements, limits and the basis for a pass or fail. The appropriate specification depends on the product and intended use. A potency result says nothing about tests the lab did not perform.
7. Check pesticides, mycotoxins and residual solvents
These are separate panels with separate lists of substances. "Not detected" or "below reporting limit" means below the method's stated threshold for that substance. It does not mean the lab proved that every possible contaminant is absent.
For dry ingredients, moisture is another useful storage and quality measurement. For a finished beverage, read the tests in the context of that beverage rather than borrowing a powder's specifications.
What makes a report independent?
A supplier COA may come from the supplier's own laboratory or a laboratory it hired. An independent lab is a separate testing organization. It can test material submitted by either a supplier or a brand.
For either document, ask who collected the sample and what the laboratory actually did. A finished-product report and an ingredient report answer different questions.
ISO/IEC 17025 is a standard for laboratory competence. If a lab claims accreditation, check its current scope and whether it covers the method you care about. An accreditation logo alone doesn't answer that.
Gaps worth asking about
- A testing badge with no report available to read.
- No laboratory name, sample identifier or date.
- A report for a different product with no explanation.
- An old report presented as proof of a current batch.
- A potency-only test described as a complete safety screen.
- "Not detected" results with no detection or reporting limits.
- A cultivar or origin claim that the listed tests do not establish.
Some of these are gaps a seller can explain. Ask for that explanation before treating an incomplete document as either proof of quality or proof of a problem.
What Kava Moon publishes
Our lab results page has the full PDFs. The independent MBL report, number 2603B95 from March 2026, tested a bottle of Signature Citrus. It measured about 296 mg of total kavalactones per 1.5 oz pour, compared with 300 mg stated on our label. Its kavalactone ranking gives a chemotype of 423165.
That report covers kavalactones, mycotoxins, pesticides and residual solvents. The supplier's report covers heavy metals and microbes for the kava extract.
The residual-solvent panel reported ethanol at 339 mg/kg and methanol at 62.7 mg/kg. We use water-extracted kava, and the tested Signature bottle contained orange juice. Juice can naturally contain traces of these substances, though the test itself does not identify their source. The reported values and the panel's limits are available in the PDF.
Use the report to ask better questions
A COA is useful because you can read what was tested instead of relying on a badge. Keep the document's scope in view. A strong result on one panel doesn't fill in a missing one.
If you need a report for a particular Kava Moon lot, contact us with the lot number. We can explain which documentation is available.
Questions about kava lab reports
Does a COA cover every batch?
No. It records results for the sample identified on the report. Ask how that sample relates to the lot on your bottle.
Does "third-party tested" mean every contaminant was checked?
No. Read the list of tests and their reporting limits. A kavalactone assay, for example, does not also establish heavy-metal or microbial results.
Can a chemotype prove kava is noble?
Not by itself. It ranks six measured kavalactones. Cultivar identity requires other supporting information, and a full assessment may include additional chemical tests and sourcing records.
What do Kava Moon's reports cover?
The March 2026 independent report tested a Signature Citrus bottle for kavalactones, mycotoxins, pesticides and residual solvents. A separate supplier report covers the extract. These reports are not currently matched to each bottle's lot.
Sources and reports
- Kava Moon's published laboratory reports.
- Single-lab validation for determining kavalactones and flavokavains, 2018.
- LiverTox review of kava.
- ISO/IEC 17025 laboratory standard.
Pedro Luz, Co-Founder of Kava MoonPedro runs Kava Moon with his family in Orlando, Florida. The family makes its drinks with noble kava and publishes its independent laboratory reports.
