A Certificate of Analysis (CoA) is the manufacturer's test report for one specific batch. It is the quickest way to confirm that what arrived is what you ordered, so it is worth reading before you accept a shipment.
1. Match the batch
Start with the product name and the batch or lot number. The lot number on the CoA must match the lot number printed on the boxes and vials. A CoA for a different lot tells you nothing about the goods in front of you.
2. Check the dates
Look at the manufacturing date and the expiry date. Make sure the remaining shelf life works for your sales cycle, especially for larger orders that will sit in stock.
3. Compare specification and result
Each test line shows a specification (the accepted range) and the actual result. Every result should fall inside its range. Typical lines include:
- Appearance and color
- pH
- Content or assay of the main active
- Microbial limits, and for injectable products, sterility and endotoxin tests
4. Look for the sign-off
A valid CoA names the issuing company, states an overall pass or release decision, and is signed or approved by the quality control department. Unsigned or undated reports should be questioned.
Ask for it every time
Request a CoA for every batch, not once per product. We send the batch CoA with each order so you can check it before the goods reach your clinics or customers.
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