Before you buy
Everything the person placing the order needs in order to read a supplier's paperwork with a straight face. Short, practical and only ever about the suppliers and their documents; nothing here is medical advice.
Understanding Research Peptide Prices: How to Compare Like for Like
How research peptide prices vary by fill, blends, format and supplier tier, with BPC-157 5 mg prices from 15 suppliers and why cheap needs a certificate.
Read the guideUpdated 2026-10-19Research Peptide Supplier Return Policies Compared
All-sales-final, money-back windows and replacement-only policies at research peptide suppliers, compared by name with windows, fees and purity guarantees.
Read the guideUpdated 2026-10-19Research Peptide Supplier Shipping Policies Compared
Dispatch cutoffs, carriers, free-shipping thresholds and international availability for 20 research peptide suppliers in one table from our October 2026 data.
Read the guideUpdated 2026-10-19Reading a Peptide Lab Report in Five Minutes: A First-Time Buyer's Walkthrough
A five-minute walkthrough of a research peptide certificate of analysis: the lab, the lot, the date, the purity method, extra tests and the listing match.
Read the guideUpdated 2026-10-19Prefilled Peptide Pens vs Vials: A Purchasing Comparison
Pens and vials as a buying decision: what each format is, how suppliers document testing for each, how pricing is listed, and which suppliers sell pens.
Read the guideUpdated 2026-10-19Payment Methods and Buyer Protection at Research Peptide Suppliers
Card, ACH, wire, crypto and peer-to-peer apps compared on chargeback rights, plus which research peptide suppliers take cards and which take crypto only.
Read the guideUpdated 2026-10-19How to Spot a Peptide Scam Site: Clones, Missing Entities and Copied Certificates
Seven warning signs of a research peptide scam site: clone domains, no company, crypto-only checkout, removed review profiles, copied certificates, what to do.
Read the guideUpdated 2026-10-19How to Choose a Research Peptide Supplier: A Priority Checklist
A six-step checklist for picking a research peptide supplier: certificates, named labs, company identity, card payments, written policies and catalog fit.
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