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How to Read a Kratom COA and Lab Report

QUALITY & BUYING · Reviewed October 15, 2026

A COA can look like a wall of numbers. Start with the batch number, then take it one part at a time.

Does this report belong to your bag?

COA means certificate of analysis: results for a tested sample. Check the product name, batch number, laboratory, and test date against your package. If the identifiers don’t match, ask why. A report for a different batch doesn’t answer the same question.

Look past the potency figure

Check what was tested, not just the biggest number. A mitragynine result doesn’t tell you whether the lab checked for microorganisms or heavy metals. Look for the units, methods, and limits used. A “pass” needs a clear explanation of the standard it passed.

What does “not detected” mean?

Usually it means the test didn’t detect something above its detection limit. It doesn’t mean a lab proved absolute zero. Something that wasn’t tested also shouldn’t be treated as absent. If a result lacks a unit or an explanation, it’s reasonable to ask for one.

What can you ask us?

Send your product name and batch number to support@kratomstash.com. Ask for the complete matching report, which laboratory issued it, and an explanation of any result you don’t understand. A clear report helps you ask better questions; it doesn’t guarantee that using a product is safe.

Sources & further reading

For adults 21+. These guides offer general information, not personal medical or legal advice. For a question about your health, medicines, or legal situation, speak with a qualified professional.