Frequently asked questions

Peptides are short chains of amino acids that act as messengers in biological systems. Because they can influence cellular signaling and biological pathways, peptides are widely studied in scientific and laboratory research across multiple disciplines.

All peptides offered by Function Peptides are provided exclusively for research and educational use. They are not intended for human consumption, medical treatment, or diagnostic purposes.

Each peptide is evaluated using analytical testing methods designed to confirm identity and purity. These quality checks help ensure consistency, accuracy, and reliability for research applications.

Yes. A certificate of analysis confirming identity and purity is issued for every batch. After you place an order, request the COA for any compound in it — from your account page, or by replying to your order confirmation with your order number — and we email it directly, matched to the lot you receive.

Unopened peptides should be stored in a cool, dry environment away from light. Once reconstituted, peptides typically require refrigeration and should be handled using sterile laboratory techniques to preserve integrity.

Organizations ordering at volume can request an account through our wholesale page or by phone. We confirm your pricing, provide documentation, and can handle reorders directly.

Orders are paid by Zelle — simple bank-to-bank transfer with no card fees. After you place your order, we show you exactly where to send payment (with your order number as the memo), and the same instructions arrive by email. Prefer to handle it on the phone? Call us and we’ll walk you through it. You never enter card details online.

Every order ships UPS Next Day Air, packed on ice, tracked, from the United States — US addresses only. We ship Monday through Wednesday so your temperature-controlled package never sits over a weekend; orders verified by 12 PM PST on a shipping day go out that same day.

Because our products are classified as research compounds, we do not offer dosing, administration, or medical guidance. Researchers are encouraged to rely on peer-reviewed literature and approved laboratory protocols.