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25 February 2025 · 7 min read

What batch testing actually means

Certificates of analysis, retained samples and the questions worth asking any brand.

Batch testing is not one thing. It covers identity testing of raw materials, purity screening for heavy metals and microbes, and confirmation that the finished product contains what the label says.

Ask any brand three questions: which tests are run, who runs them, and can you see the certificate of analysis for the batch number on your pack.

We publish our batch process on the Quality and Testing page. Where supplier documentation is still being verified, we say so rather than implying certification we do not yet hold.

This article is general information about supplement labelling and routines. It is not health advice and does not describe treating, preventing or curing any condition.