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What is Certificate of Analysis (COA)?

How It’s Used Before purchasing, check whether a vendor provides batch-specific COAs and whether those results show acceptable alkaloid levels and clean…

How It’s Used

Before purchasing, check whether a vendor provides batch-specific COAs and whether those results show acceptable alkaloid levels and clean contaminant screenings. Many vendors display COAs on product pages; others provide them on request. If a vendor cannot or will not produce a COA, that is a meaningful signal about their commitment to transparency.

In the industry, COAs are a compliance requirement. AKA GMP-certified vendors must maintain COAs for every batch sold. KCPA regulations in some states require testing documentation to be available. Wholesale buyers routinely request COAs as a condition of doing business. The presence or absence of accessible, batch-specific COAs is one of the fastest ways to gauge whether a vendor takes quality seriously.

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Further Reading & Resources

How to Read a Kratom Lab Test (COA)

Learn how to verify mitragynine content and screen for contaminants using third-party certificates of analysis.

Scientific Literature Directory

Access an aggregated, searchable database of peer-reviewed studies detailing kratom pharmacology.

Last updated: Jul 2026

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