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Third-Party Testing & COA: Why They Matter

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1What Is a COA?

Third-Party Testing & COA: Why They Matter · 信息卡
CategoryOEM
TagsOEM · ODM · supplements · manufacturing
PublishedAug 19, 2026
Views97 times

A Certificate of Analysis (COA) is a document issued by a quality laboratory that confirms a product meets its specifications for identity, potency, purity and safety. Reputable OEM/ODM manufacturers provide a COA for every batch.

2Why Independent Testing Matters

Third-party testing removes any conflict of interest. An accredited lab verifies that active ingredients match the label claim and that heavy metals, microbes and contaminants stay within safe limits.

3What to Check

Look for identity testing, assay/potency, microbial limits, heavy metals (lead, cadmium, mercury, arsenic), and pesticide residues. Keep COAs on file for export compliance and retailer audits.

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