All Peptides.GG products are manufactured to research-grade specifications, with purity specified at 99%+. Purity is assessed by third-party laboratories using HPLC (High-Performance Liquid Chromatography), with identity confirmed by mass spectrometry.

COA purity data is published on 60+ product pages, sourced from third-party laboratories. Where COA data is available for a compound, it appears on that product’s page. The analytical methods used include:

• HPLC purity analysis
• Mass spectrometry for molecular-weight confirmation
• Bacterial endotoxin — Limulus amebocyte lysate (LAL) method

If you need documentation for a specific compound, contact us at [email protected].

Our peptides are produced in GMP-certified facilities, and our manufacturing partners adhere to Current Good Manufacturing Practices (cGMP). Peptides.GG is a US-based supplier and all orders ship domestically within the United States.

Unreconstituted (lyophilized/powder form) peptides should be stored at -20°C to -80°C (freezer) for long-term storage. For short-term storage (up to 3 months), refrigeration at 2-8°C is acceptable. Keep peptides in their original sealed vials, protected from light and moisture. Always allow vials to reach room temperature before opening to prevent condensation.

Reconstituted peptide solutions generally remain stable for 30-60 days when stored at 2-8°C (refrigerator). Stability varies by compound – refer to the specific product page for detailed storage guidelines. Avoid repeated freeze-thaw cycles, which can degrade peptide structure.

All orders ship within 12-24 hours from time of placement Monday through Saturday. Orders are packed to protect the product in transit. Domestic US orders typically arrive within 2-4 business days depending on your location. You’ll receive a tracking number via email as soon as your order ships.

We accept multiple payment methods for your convenience:

• Credit/Debit Cards
• Venmo
• Cash App
• Zelle
• eCheck
• Cryptocurrency (select options)

All transactions are processed securely. For Venmo, Cash App, and Zelle orders, you’ll receive our current payment accounts to send to on the order confirmation page.

No. All products sold by Peptides.GG are strictly for laboratory research purposes only. Our peptides are not intended for human consumption, medical use, diagnosis, or treatment of any condition. They are research-grade compounds intended for qualified researchers conducting approved scientific studies.

Researchers are responsible for obtaining any institutional approvals required by their organization before conducting studies with our products.

No special license is required to purchase research peptides from Peptides.GG. However, all customers must:

• Be 21 years of age or older
• Acknowledge that products are for research use only
• Agree to use products in compliance with applicable federal, state, and local laws
• Not use products for human consumption or medical purposes

We reserve the right to limit or decline any order.

Because we cannot verify the storage conditions or chain of custody of a product once it has left our facility, returns are not permitted. All sales are final once the order has been processed and shipped.

Exception for Shipping Errors:

If your order arrives with incorrect items or products that differ from what was ordered, we will make it right. In these cases:

1. Contact us immediately at [email protected] with your order number
2. Provide photos showing the items received
3. Describe the discrepancy between what was ordered and what arrived

We will promptly ship a replacement of your original order at no additional cost. Our commitment is to ensure you receive exactly what you ordered, maintaining the highest standards of accuracy in fulfillment.

Please verify your order details carefully before completing checkout, as we cannot accept returns for buyer’s remorse, incorrect selections, or changes of mind.

Yes. Our peptide affiliate program pays 15% commission on every order placed with your code, and gives the people you refer 15% off. It is free to join, there is no cap on what you can earn, and once someone orders with your code they stay attributed to you.

You can read the full terms on the Referral Partner Agreement.