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Third-party verified research peptides

The most extensively tested peptides in the industry.

Research-grade peptides with published, batch-matched certificates of analysis. Identity and purity verified on every batch by independent labs. Shipped same day from California.

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  • Same-day shipping before 2 PM PST
  • Free shipping on orders over $250
Life Link Research peptide vials

Third-party tested

Every batch is verified for identity and purity, with rotating checks for heavy metals, endotoxins, and sterility.

Janoshik and US labs

Tested by Janoshik Analytical and independent US-based laboratories.

Same-day shipping

Order by 2 PM PST — ships same day. 2-Day UPS Air from California.

30+ compounds

Peptides, blends & research kits — each with a published certificate in the COA Library.

The catalogue

Browse by research area

BPC-157 research vial Repair & recoveryTissue, tendon and gut research lines12 lines Retatrutide research vial Metabolic & GLPIncretin, metabolic and body composition research12 lines Ipamorelin research vial Growth hormoneSecretagogues and releasing hormone analogues6 lines NAD+ research vial Longevity & cellularMitochondrial, cellular and redox research5 lines DSIP research vial Cognitive & sleepNootropic and neuro research sequences5 lines Wolverine research kit Research kitsPre-combined multi-compound sets, 5% off5 kits

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Research kits

Pre-combined sets, 5% off

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Repair & Recovery Research

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Metabolic & GLP Research

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Growth Hormone Research

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Longevity & Cellular Research

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Cognitive & Sleep Research

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Sexual Health Research

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Immune Research

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Capsules

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Testing transparency

Purity alone is half the answer. We verify identity too.

Identity and purity are verified on every batch by independent third-party labs, Janoshik Analytical and US-based laboratories, with heavy metals, sterility and endotoxin on a rotating cycle. Every certificate is published in the COA library before the batch ships.

Open the COA library Read the testing protocol

TestLife Link ResearchMost suppliers
HPLC purityYesYes
LC-MS identity confirmationYesNo
Heavy metals (ICP-MS), rotating cycleYesNo
Endotoxin (LAL), rotating cycleYesNo
Sterility, rotating cycleYesNo
Verified by Janoshik and US-based labsYesNo

Secure checkout

Card, ACH and Bitcoin accepted. Your order details never leave an encrypted connection.

Same-day dispatch

Order before 2 PM PST on a business day and it ships the same day from California.

Free shipping over $250

Applied automatically at checkout. Free bacteriostatic water with orders over $500.

Loyalty rewards

Every order earns points. Sign in or place an order to join the loyalty program.

Start your research today.

Thirty-plus compounds, research kits at 5% off, and quantity pricing that saves up to 20% on ten or more vials. Every batch documented before it ships.

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For laboratory research use only. Products on this site are not for human or veterinary use, not for use in diagnostic or therapeutic procedures, and have not been evaluated by the FDA for safety or efficacy. They are supplied strictly to qualified researchers aged 21 and over.