A Certificate of Analysis is an official lab document that verifies your peptide's quality. Key sections include: Purity (should be 99%+), Identity (confirms correct peptide via mass spec), Appearance (should match product description), and Endotoxin levels (should be below 1 EU/mg). Each CoA is batch-specific and available on product pages.

Bacteriostatic water (BAC water) is sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth. It is a standard laboratory supply used in research settings. We offer pharmaceutical-grade BAC water in our accessories section.

Lyophilized (freeze-dried) peptides are very stable. For short-term storage (under 3 months), room temperature in a cool, dark place is fine. For long-term storage, refrigerate at 2-8°C or freeze at -20°C. Avoid repeated freeze-thaw cycles. Properly stored lyophilized peptides can remain stable for 2+ years.

Orders are processed within 0-2 business days. Standard shipping takes 3-5 business days from fulfillment. Every order includes free shipment protection. Lyophilized peptides don't require cold shipping—they're stable at room temperature. All orders ship in discreet, unlabeled packaging.

Currently, we ship to all 50 U.S. states. International shipping varies by country due to customs regulations on research materials. Contact our support team for specific country availability. All international orders may be subject to local customs fees and import duties.

Peptide Stash is a U.S.-based peptide research supplier committed to quality and transparency. We source from GMP-compliant manufacturers and conduct independent third-party testing on every batch at accredited American laboratories. Unlike other suppliers, we provide full Certificates of Analysis, maintain strict quality control, and back everything with our 99%+ purity guarantee.

All Peptide Stash peptides are sold strictly for research, laboratory, and educational purposes only. They are not approved for human consumption, veterinary use, or any therapeutic application. By purchasing, you confirm you are a qualified researcher and will use products in accordance with all applicable laws and regulations.

We offer damage protection on every order. If your product arrives damaged in transit, contact us with photos of the damage and we'll send a one-time replacement. All claims require photo evidence and are subject to review. One replacement per customer per order. Reconstituted products are not eligible. We are not responsible for misuse or improper storage after delivery.

You can reach our support team via our support email for the fastest response. We typically respond within 24 hours on business days. For order issues, have your order number ready. Our team can help with product questions, order tracking, and any concerns about your purchase.