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How to evaluate a peptide vendor

A checklist-style guide for researchers comparing vendors: transparency, reviews, lab testing, and shipping.

Editorial team · 10 min read · Updated

Start with transparency

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Look for a vendor that publishes lab results, sourcing information, and a clear refund policy. The absence of these is the most useful signal.

Read reviews critically

A handful of five-star reviews from accounts with no history is less informative than a single thoughtful four-star review from someone who has reviewed several vendors over time.

How to evaluate a peptide vendor · AminoCatalog