How to Verify a Research Peptide Supplier: A 7-Point Checklist

Research peptides are sold online by many suppliers, and their quality cannot be judged from a product photo. These seven checks take a few minutes and show whether a supplier can prove what is in the vial.

The seven checks

Is there a certificate of analysis for the specific batch?

A CoA should belong to the batch you receive, not to a sample from last year. Look for a batch or task number and a test date.

Who did the testing?

A report from an independent laboratory is worth more than an in-house one. The laboratory should be named, and the report should be verifiable at the source.

Is purity stated as a number?

HPLC purity should be given as a percentage, for example above 99%, together with the method. Words like high purity without a figure prove nothing.

Does the batch number on the vial match the report?

The number printed on the vial must be the one on the report. If they differ, the report describes a different product.

Is the amount per vial clear?

The label should state the amount in milligrams, and the report should confirm it. Vague sizes make results impossible to compare.

Are dispatch and delivery terms written down?

Check where the order ships from, how long delivery takes, who pays customs and whether there is a tracking number. Peptides are sensitive to heat, so transit time matters.

Can you reach a person?

A working e-mail address or chat, a company name and clear return terms are basic signs of a real business.

How CellMind answers these checks

Every CellMind batch is tested by Janoshik Analytical, and the reports are public: lab reports and CoA. The batch number is printed on the vial, the amount is stated on every product page, and delivery terms are listed before checkout.

For research use only. Not for human consumption.