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  • Free shipping on orders over $250
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  • Every batch tested by an independent lab

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

Third-party tested

Identity and purity on every batch, with a rotating secondary panel for heavy metals, endotoxin and sterility.

Janoshik and US labs

Testing runs through Janoshik Analytical plus US-based laboratories, with every certificate published before the batch ships.

Same-day shipping

Orders placed before 2 PM PST leave the same business day. Two-day UPS Air from California.

30+ compounds

Peptides, blends and research kits, every one with its certificate published 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.

Shop all peptides Read the research library

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.