Frequently Asked Questions

Peptides are short chains of amino acids - typically 2 to 50, sometimes up to about 100 - linked together by peptide bonds. They're essentially smaller versions of proteins and occur naturally in biological systems, where they play important roles in a wide range of physiological and cellular processes.

Most peptides work by binding to specific targets - typically receptors on the cell surface, though sometimes enzymes or other proteins - with high specificity and affinity. The binding works something like a key fitting into a lock: once a peptide binds its target, it activates signaling pathways inside the cell.

Long-term storage (months to years): Store at -20°C (standard freezer) or preferably -80°C (ultra-low freezer) in a tightly sealed vial, protected from light. Most lyophilized peptides remain stable for several years under these conditions.

Short-term storage (weeks to a few months): 4°C (refrigerator) is generally acceptable. Room temperature, in a cool, dry, dark place, is fine for days to weeks if you plan to use the material soon.

Yes. Every ProFound Peptides product is independently tested by a third-party lab using HPLC (High-Performance Liquid Chromatography) and mass spectrometry. We stand behind 99%+ purity across our catalog and provide a batch-specific Certificate of Analysis for every product - searchable by lot number on our COA Lookup page.

Once your order ships, you'll receive an email confirmation with a tracking number you can use to monitor delivery. If you don't receive tracking details or run into an issue with your shipment, reach out to our team and we'll help sort it out.

We accept Cash App, Bitcoin, Apple Pay, Zelle, and Chime. Paying with Bitcoin gets you an automatic 5% discount. Payment is confirmed directly with our team via chat after you submit your order.

We currently ship to addresses within the United States and select international locations, subject to applicable laws, import restrictions, and carrier limitations. If an order can't be shipped to your location, our team will reach out directly to discuss alternatives or issue a refund. See our Shipping Policy for full details.

All products are sold strictly for in-vitro laboratory research use, to qualified researchers affiliated with a legitimate laboratory, academic, or scientific institution. You must be at least 21 years old to access or purchase from this site. See our Zero Tolerance Policy for full terms.