What is a COA?

COA = Certificate of Analysis
It is a document that certifies the quality analysis results of a product. 💯

Especially for Peptides / Research Products, a COA is very important because it helps verify key product information, such as:

✅ The product inside the vial matches what is stated on the label
✅ Purity percentage is clearly shown
✅ The product has been tested by a laboratory
✅ Unwanted contaminants have been checked
✅ Lot information and testing date are provided

What information is usually included in a COA?

• Substance name / product name

• Quantity, such as 10 mg or 20 mg

• Purity value or purity percentage

• Testing methods, such as HPLC or MS

• Name of the testing laboratory

• Document issue date / product lot number

Most importantly

A reliable COA should have a QR Code that can be scanned to verify the test results directly on the laboratory’s official website.