Directory
Each listing links straight to the supplier and shows the discount code we last checked in the cart or at checkout.
US-based research peptide supplier shipping from the US and UK. It publishes third-party Janoshik lab reports and a COA search by lot number.
10% off
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Shreveport, Louisiana supplier of US-made research peptides. Each lot has a public Bioviridian COA for identity, purity, content, endotoxin and heavy metals.
10% off store-wide
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Research peptide supplier in North Charleston, SC. Its Certificates page posts batch sterility and endotoxin reports from Eagle Analytical, a Houston lab.
10% off store-wide
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Family-run Calgary, Canada supplier of research peptides. Every batch has a published third-party lab report, rejected lots included, found by the vial's code.
10% off, plus quantity savings up to 30%
No code needed: the discount applies automatically at checkout.
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US-based research peptide supplier. Third-party HPLC and mass-spec tested, with the certificate of analysis on every product page.
Up to 12% off with bulk pricing
No code needed: the discount applies automatically at checkout.
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New Jersey supplier of US-made research peptides, with batch reports for purity, heavy metals, endotoxin and sterility on the product page.
10% off your order
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UK clinician-led metabolic health and weight loss programme for women, with personalised plans and clinical support.
20% off your first payment
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US research peptide supplier with 32 peptides, HPLC-tested, with third-party COAs published for tested lots and orders shipped in 1–2 business days.
30% off sitewide
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Louisiana research peptide supplier with same-day dispatch. Its ILS Laboratories certificates carry an access code you can check with the lab.
15% off your order
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US-compounded research peptides from a team active since 2012, dispatched within 24 hours by USPS Priority Mail, with a certificate of analysis linked on each product page.
10% off your order
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California research peptide store that publishes a Vanguard Laboratory certificate for each tested lot, covering HPLC purity, assay and endotoxin. Orders before 2pm PST ship the same business day.
20% off your order
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Veteran-owned Las Vegas research peptide store with a searchable library of batch certificates from Freedom Diagnostics, ILS Laboratories and Kovera Labs. Orders before 12pm PST ship the same day, US only. For laboratory research use only. Not for human consumption, diagnostic, or therapeutic use.
10% off your order
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Miami-based research peptide supplier shipping within the United States. Its product pages show batch certificates from Freedom Diagnostics and ILS Laboratories.
Buy 2, get 1 free
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Send us the details and we will review it for the directory. Listings are free and rankings are never for sale. Shoppers: find the best code for your cart, see every promo code on one page, see how we vet suppliers, try the reconstitution calculator, or read the research blog.