Frequently asked questions
Everything you need to know about ordering from Peptryn.
Shipping
How fast do orders ship?
Orders ship same-day from our US facility when placed before our daily cutoff. You’ll receive tracking information as soon as your order ships.
Do you ship internationally?
At this time we ship exclusively within the United States.
Is packaging discreet?
Yes. All orders are shipped in plain, unmarked packaging with no reference to the contents on the outside.
Storage & handling
How should I store peptides after they arrive?
Lyophilized (freeze-dried) peptides should be stored in a freezer until use. Once reconstituted, follow the storage guidance on the product’s Certificate of Analysis and accompanying documentation.
How long do peptides last once reconstituted?
Stability varies by peptide. Refer to the COA and any accompanying documentation for the specific product you purchased.
Payment
What payment methods do you accept?
We currently accept Zelle, CashApp, and USDT (TRC-20). Full instructions are provided during checkout after you place your order.
Is my payment information secure?
We don’t store any payment credentials on our servers. Payment instructions are sent directly and processed through the payment method you choose.
Certificates of Analysis (COA)
Is a COA included with every order?
Yes. Every batch we sell is tested by an independent third-party lab. You can view purity, identity, and endotoxin results for our products in the COA Library.
How do I match a COA to my specific order?
Each COA lists the lot number for that batch. Check the lot number on your product label against the COA Library to confirm you have the correct report.
Research use disclaimer
Are these products approved for human use?
No. All products sold by Peptryn are sold strictly for laboratory research purposes. They are not drugs, dietary supplements, or cosmetics, and are not intended for human or veterinary use, diagnosis, treatment, cure, or prevention of any disease.
Who can purchase from Peptryn?
Our products are intended for qualified researchers and laboratories. By purchasing, you confirm the products will be used solely for in-vitro research or laboratory experimentation.
Returns
What is your return policy?
Due to the nature of our products, we’re unable to accept returns once an order has shipped. If your order arrives damaged or incorrect, contact us and we’ll make it right.
What if my order arrives damaged?
Contact us through our Contact page with your order number and photos of the issue, and we’ll resolve it promptly.