THIRD-PARTY VERIFIED≥99% PURITY, EVERY BATCH

Purity you can verify.Not just promise.

Onyx supplies research peptides to laboratories that can’t afford ambiguity. Independent HPLC and mass spectrometry confirm sequence identity and purity on every batch, and the certificate ships with the vial, not just the marketing page.

See how Onyx tests ›
✓ Cold-chain shipping, tracked door to door✓ Independent certificate of analysis per batch✓ For in-vitro laboratory research only
Onyx Biolabs research peptide vials

Rapid Domestic Logistics

Free standard ground shipping on all research orders over $200.

99%+ Verified Purity

Every batch is third-party tested via HPLC and Mass Spec for total transparency.

Expert Research Support

Dedicated technical support via our secure contact terminal.

20% OFF GRANT PROGRAMINSTITUTIONAL ACCESS
Academic Faculty, Clinical Staff, Defense & First Responder Research Personnel
Strictly for credentialed investigators conducting in vitro laboratory studies. Powered by VerifyPass.
First time buyer?

Skeptical? We understand.

The research industry is flooded with under-dosed vials and fake lab reports. At Onyx Peptides, we don’t ask for your blind trust, we prove our standard with every single batch we dispatch.

3rd-Party HPLC Verified

We partner exclusively with Kovera Labs. Every single batch across our entire catalog is independently verified for >99% analytical purity before it ever reaches our inventory.

Zero Under-Dosing

Your research requires precision. Our CoAs don’t just test for purity, they test for exact Net Content to guarantee zero under-dosing. No fillers, no guesswork.

Cold-Chain Integrity

Peptides degrade rapidly when handled poorly. Our entire inventory is climate-controlled and shipped quickly from our domestic US facility to protect structural integrity.

Responsive Support

No ghosting, no runarounds. Our US-based support team is available to assist with tracking, lost packages, or answering questions about your specific batch.

Verify our latest lab reports →

Trusted by Researchers

TRUSTED BY 3,000+ RESEARCHERS

Setting the industry standard for purity and fulfillment.

★ ★ ★ ★ ★
Excellent 4.5/5 on Trustpilot

Frequently Asked Questions

Answers to common questions about ordering, shipping, and using our research peptides.

What is Onyx Peptides?

Onyx Peptides is a supplier of research peptides intended strictly for laboratory and in-vitro research use.

Are your peptides intended for human consumption?

No. All products are sold for research, laboratory, or analytical purposes only and are not intended for human or animal use.

Do you provide third-party lab testing?

Yes, every batch is independently tested and certificates of analysis are available on our Lab Results page.

What is your minimum purity standard?

Our products are manufactured and verified to meet a 99% purity threshold.

How fast do you ship orders?

Orders placed before 2 PM EST ship the same day through our cold-chain fulfillment process.

Do you ship internationally?

Shipping availability varies by destination. Please check our Shipping & Delivery page for details specific to your location.

How should I store peptides after they arrive?

Store lyophilized peptides in a freezer and keep reconstituted solutions refrigerated and protected from light.

What payment methods do you accept?

We accept credit and debit cards, ACH and bank transfers, Zelle, CashApp, and select cryptocurrencies.

Is my payment information secure?

Yes, all transactions are processed through encrypted terminals to help protect your information.

Can I track my order?

Yes, use the Track Order page with your order number and email address to view your shipment status.

What is your return policy?

Please review our Return & Refund Policy page for eligibility requirements and step-by-step instructions.

Do you offer bulk or wholesale pricing?

Contact our support team with your research quantity needs and we will do our best to assist you.

How do I contact customer support?

You can reach us by phone, email, or through the contact form on our Contact page.

Are your products regulated by the FDA?

Our statements and products have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease.

Who can purchase from Onyx Peptides?

Our products are restricted to qualified researchers and laboratories for in-vitro experimental use only.

Buy Research Peptides USA | >99% Purity

Onyx Peptides supplies U.S. laboratories with research peptides verified to >99% purity, backed by independent third-party testing on every batch.

Onyx Research Peptides

Onyx Research Peptides are manufactured under strict quality controls and shipped with certificates of analysis for laboratory and in-vitro research.

Onyx Biolabs | Premium Research Peptides USA

Onyx Biolabs is a U.S.-based supplier of premium research peptides, offering transparent lab documentation and reliable, same-day dispatch.

TB-500 | Sermorelin | NAD+

Browse our catalog of research compounds, including TB-500, Sermorelin, and NAD+, each supported by independent lab results for research use only.

Buy Peptides Online

Order research peptides online through a secure, encrypted checkout, with fast cold-chain shipping to laboratories nationwide.

U.S. Peptide Supplier

As a U.S. peptide supplier, Onyx Peptides prioritizes purity, transparency, and dependable fulfillment for researchers who need verified materials.

Simple Peptide | High-Quality Research Peptides Online

Ordering research peptides online should be simple: browse verified, high-quality research peptides and review lab results before every purchase.

American Research Peptides

Onyx Peptides supplies American research peptides manufactured and independently tested domestically to meet rigorous purity benchmarks.

USA Based Peptide Supplier

As a USA based peptide supplier, we combine domestic fulfillment with independent lab verification so researchers can order with confidence.