If you've shopped for kratom online, you've probably seen vendors mention a "COA" or "Certificate of Analysis." It's one of the most important documents in the botanical industry - and knowing how to read one helps you buy with confidence. This guide explains what a COA is, what it reports, and what to look for, without any claims about what kratom does.
What a COA actually is
A Certificate of Analysis is a lab report produced by an independent, third-party testing facility. When a kratom vendor sends a batch of powder to a lab, the lab analyzes a sample and issues a COA documenting what it found. It's essentially a fact sheet about that specific batch of product - not marketing, just measured results. The key phrase is "third-party." A COA from an independent lab, rather than the vendor's own claims, is far more meaningful, because the lab has no stake in the result.
What a COA typically reports
Alkaloid content. The most-cited figure is the mitragynine content - the primary naturally occurring alkaloid in the kratom leaf. Many COAs also list 7-hydroxymitragynine. These are usually shown as a percentage or in milligrams per gram. This tells you the composition of the powder in that batch.
Contaminant screening. Reputable labs screen for heavy metals such as lead, arsenic, cadmium and mercury, and for microbiological contaminants such as salmonella, E. coli, and yeast or mold. Because kratom is an agricultural product, this screening is important for quality assurance.
Batch and date details. A proper COA names the specific batch or lot number and the date tested, so you can match the report to the product you're buying.
How to read one
When you look at a COA, check three things. First, is it from an independent lab? Look for the lab's name and accreditation, not just the vendor's logo. Second, does the batch match? The lot number on the COA should correspond to the product you're purchasing. Third, is it recent? Kratom is harvested in batches, and an up-to-date COA reflects current stock.
Why COAs matter when choosing a vendor
Because kratom isn't standardized the way many packaged goods are, the COA is the most objective way to compare products and vendors. A vendor who tests every batch and makes the COA available is showing you exactly what's in the powder - no guesswork. It's a strong signal of a transparent, quality-focused operation.
Rimba's approach
At Rimba Botanicals, every batch is third-party lab-tested, and we make the Certificate of Analysis available so you can review the mitragynine content and contaminant screening for the product you're buying. We'd rather show you the data than ask you to take our word for it.
Quick summary
A COA is an independent lab report on a specific batch. It documents alkaloid content such as mitragynine and screens for contaminants. Check that it is third-party, batch-matched, and recent. A vendor who provides COAs is showing transparency.
Not for human consumption. 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. Must be 21 years or older to purchase.