All testing is conducted by accredited independent laboratories using reverse-phase HPLC and ESI-MS/MS. Results are batch-specific. If you require a CoA for a specific lot number not shown here, please contact our team.

Guidelines for lyophilized peptide storage, bacteriostatic water reconstitution, and stability under various conditions.

Definitions for HPLC, MS, purity percentage, lyophilization, and other technical terms used across our documentation.

Best practices for receiving, storing, and handling cold-shipped peptides to preserve integrity from transit to bench.

How to read a CoA, what each field means, and how to cross-reference results with your own in-house assays.

Overview of the reverse-phase HPLC method used for purity determination, including column specs and mobile phase.

Interested in a compound not in our catalog? Submit a request to our synthesis team for a quote and timeline.

Built for researchers,
by researchers.

Prolign was founded with a single purpose: to give research laboratories access to the highest-quality peptides without compromise. We believe the integrity of your results starts with the integrity of your compounds.

Every compound in our catalog is synthesized in our US-based GMP-compliant facility, independently verified. No shortcuts. No overseas repackaging. Just science.

To supply research laboratories with peptides that meet the most exacting standards — and to stand behind every vial we ship with full analytical documentation.

We never self-certify. Every batch is sent to an accredited third-party laboratory for HPLC purity testing and mass spectrometry identity confirmation before it ships.

All Prolign compounds are intended strictly for in-vitro laboratory research. We take this seriously — and we expect our customers to as well.

Our scientific team can help with compound selection, protocol questions, and custom synthesis enquiries.

We typically respond within 1 business day.

Thanks for reaching out. Our team will be in touch within 1 business day.

We currently ship to the United States and Canada. We do not ship outside of North America at this time. If you are located outside North America and are interested in our compounds, please contact us to discuss options.

All lyophilized peptides are shipped using cold-chain packaging to maintain compound stability throughout transit. Every order includes:

Upon receiving your order, inspect all vials immediately. Store lyophilized peptides at -20°C until ready to use. If you notice any damage or discrepancy, contact us within 48 hours with photographic evidence.

If you have any questions about shipping or your order, contact us through the contact form on our About page.

—

All products sold by Prolign Peptide Sciences are intended strictly for in-vitro laboratory research purposes only. They are not intended for human or veterinary use, consumption, or any application outside of controlled research environments.

All compounds sold by Prolign Peptide Sciences are sold exclusively for in-vitro scientific research. By purchasing from us you confirm that you are a qualified researcher or act on behalf of a licensed research institution and that all products will be used solely for legitimate, lawful scientific research.

Our products are not approved by the FDA or any regulatory authority for human or veterinary use. They are not drugs, supplements, or treatments. Any use of our products for human or animal consumption is strictly prohibited. Prolign assumes no liability whatsoever for any such use.

You must be at least 18 years of age to purchase from Prolign. By placing an order you confirm you meet this requirement and that you have the legal authority to purchase research compounds in your jurisdiction.

Purchaser is solely responsible for ensuring that the purchase, possession, and use of all compounds complies with all applicable local, state, federal, and international laws and regulations. Prolign makes no representations regarding the legality of any compound in any jurisdiction outside our facility.

Nothing on this website constitutes medical advice. No product sold by Prolign is intended to diagnose, treat, cure, or prevent any disease or condition. All research data and compound descriptions are provided for scientific reference only.

Due to the nature of research compounds and cold-chain shipping requirements, all sales are final. Refunds or replacements are only issued in cases of verified shipping damage or incorrect product fulfillment. Claims must be submitted within 48 hours of delivery with photographic evidence.

Prolign Peptide Sciences shall not be liable for any direct, indirect, incidental, special, or consequential damages arising from the purchase or use of our products. Our total liability in any circumstance shall not exceed the purchase price of the product in question.

All content on this website including text, graphics, logos, and design is the property of Prolign Peptide Sciences and may not be reproduced without written permission.

These terms shall be governed by the laws of the United States, without regard to conflict of law provisions.

For questions regarding these terms please contact us through the contact form on our About page.

When you request an account or contact us we collect your name, email address, phone number, and information about your intended research use. When you make a purchase we collect your billing and shipping address. We do not store payment card details — these are handled securely by our payment processor.

We use your information to process orders, fulfill account requests, communicate with you about your orders, and improve our services. We do not sell, rent, or share your personal information with third parties for marketing purposes.

All payments are processed by Stripe, Inc. Your card details are never stored on our servers. Stripe's privacy policy governs the handling of your payment information.

We use essential cookies to maintain your session and remember your cart. We do not use tracking cookies or third-party advertising cookies.

We retain your order information for 7 years as required by law. You may request deletion of your personal data at any time by contacting us, subject to legal retention requirements.

You have the right to access, correct, or delete your personal data. You may also object to processing or request data portability. To exercise these rights please contact us through our contact form.

We implement industry-standard security measures to protect your personal information. All data transmission is encrypted via SSL/TLS.

For privacy-related enquiries please contact us through the contact form on our About page.