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Choosing a supplier

What are the red flags in a supplier?

⚡ Short answer

The biggest red flags are no batch-specific certificates, certificates you cannot verify, health or dosing claims, prices far below the market, and no real business name or address. A trustworthy supplier publishes testing for each batch and keeps strict research-use wording.

Educational onlyUpdated 21 Oct 2026
Choosing a supplier

Paperwork red flags

No certificate of analysis, or one certificate used for every batch.
Certificates with no batch number, date or lab name.
Identical chromatograms on reports for different batches.
A lab you cannot find, contact or verify a report with.
Choosing a supplier

Marketing red flags

Health, effect or dosing claims, or pictures of people using the product.
"Research use only" in small print while the rest of the site says otherwise.
Reviews describing personal use that the seller leaves up.
Choosing a supplier

Business red flags

No company name, address or way to contact a real person.
Prices far below everyone else. Proper synthesis and independent testing cost money.
Only unusual payment methods, with no card or bank options.
Educational information only

Educational information only. Nothing here is medical advice, dosing guidance or a recommendation to use any substance. Research peptides are not approved medicines and are not for human or animal consumption. Speak to a qualified professional and follow the law where you are.

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