For research use only — not for human consumption
◆
Free BAC water on orders over $150
◆
For research use only — not for human consumption
◆
Free BAC water on orders over $150
◆

Trusted by 15,000+ researchers

Research peptides, proven pure.

Lab-grade compounds, sealed and lyophilized, every batch verified to 99%+ purity. Confidence isn't claimed here, it's documented.

99%+

Avg purity

5K+

Trusted customers

24h

Shipped within

Lab-tested purity
Verified to 99%+ per batch
Fast shipping
Same-day before noon CST
Expert support
Real answers, fast replies
Secure & discreet
Encrypted, plain packaging
Curated Bundles
Bundles,ready to run

Compatible compounds, paired and priced together. Each ships with its own lot and certificate.

Sale!
Sale!
$189.99
$149.99
Purity & identity

HPLC

Compound identity and purity confirmed for every lot — tested before it's listed.

Sealed & lyophilized

SEALED

Cold-handled and vacuum-sealed, so what you order is what arrives at your bench.

Batch traceability

TRACE

Every vial carries a lot number you can trace back to its source and report.

Traceability

Independently third-party lab tested

Every peptide batch is independently tested by qualified third-party laboratories to verify identity, purity, and consistency. Test results help support quality assurance and provide researchers with confidence in the integrity of the products they receive.

THIRD-PARTY TESTED
Premium Quality · Research purposes only

Verified.

Sealed.

Shipped fast.

LI Labs holds every compound to the same standard — tested for purity, traceable by lot, and out the door within a day.

10+

Compounds

5K+

Trusted customers

4.9/5

Customer rating

"Switched after purity issues elsewhere. LI Labs has matched our independent testing every single time — the consistency is unmatched."

MC

M. Chen

Research lab director

"Order Monday, product by Wednesday. Sealed clean, lot numbers on everything. The traceability makes our compliance easy."

SK

S. Kim

Operations manager

"The Wolverine stack is the cleanest BPC/TB I have run. Finally a vendor that actually understands lab science."

MT

M. Torres

Biochem researcher

Good to know

Frequently asked questions

LI Labs is a Texas-based research peptide and compound supply company providing HPLC-verified, lyophilized research materials exclusively for in-vitro laboratory use. Every product ships with an independent Certificate of Analysis.

We currently ship within the continental United States. International orders are reviewed on a case-by-case basis depending on local research-material regulations. Contact us for international inquiries.

No. All LI Labs products are sold strictly for in-vitro research use only. They are not approved by the FDA for human use. By purchasing, you acknowledge that products will be used exclusively within a qualified research environment.

Email us at support@lilabs.com or use the contact form on our Contact page. Our research support team is available Monday through Friday, 9am–6pm CST, and responds to all inquiries within 24 hours.

No special license is required for purchasing research peptides in the United States. However, buyers must confirm that products will be used exclusively for legitimate research purposes in a qualified laboratory setting.

Age Verification Required

LI Labs sells research peptides exclusively to qualified researchers and laboratories for in vitro and laboratory use.

Please confirm before continuing.

By proceeding you affirm the statements above are true. Products are not for human or veterinary use, not for use in diagnostic procedures, and have not been evaluated by the U.S. Food and Drug Administration. Full disclaimer.