Frequently Asked Questions

Peptides are short chains of amino acids that act as signalling molecules in biological systems. In a laboratory setting they are studied for how they bind to specific receptors and interact with cellular pathways. Our compounds are supplied to qualified researchers for in-vitro laboratory work only — we do not provide guidance on any application outside that.

All products sold by PeptiCaribe are intended strictly for Research Use Only (RUO). They are for in-vitro laboratory research, educational, and scientific purposes by qualified researchers and institutions only. Our peptides are not for human consumption, veterinary use, diagnostic purposes, or any therapeutic application. They have not been evaluated by the FDA for safety or efficacy in humans. By purchasing, you confirm you are using these compounds for legitimate laboratory research purposes only.

Yes. Every batch is tested by an independent third-party analytical laboratory to verify identity, purity and sterility before release. The Certificate of Analysis for each lot is published in our COA library. Current certificates cover four core tests — identity by LC-MS, batch-average purity by HPLC, net peptide content against the labelled quantity, and sterility. All products are supplied for research use only.

Every batch comes with a Certificate of Analysis from an independent third-party laboratory. You can view or download COAs on our COA page, or request one at any time by emailing info@pepticaribe.com with your order number. We are expanding our testing panel on future batches and any additional tests will be shown on the certificate itself.

Store lyophilized peptides at –20°C for long-term stability or 2–8°C (refrigerated) for short-term use. Protect from light, moisture, and repeated freeze-thaw cycles. Once reconstituted, store in the refrigerator and use within the timeframe indicated on the product label or COA. Always follow standard laboratory handling protocols and wear appropriate personal protective equipment.

Products are shipped out the same day if placed before 4PM EST and are expected to arrive at your delivery address within 2–3 business days, as 2-day shipping is included in every order.

We are currently accepting all major credit cards, Apple Pay, Google Pay, ACH Payments, and Zelle. All transactions are processed through secure, encrypted payment gateways to protect your information. Full details are in our Payment & Billing Policy at /payment-billing.

Orders placed before 4:00 PM Eastern Time ship the same business day when payment has cleared. Domestic and international orders include FREE 2-Day Air Shipping with no minimum order. Full carriers, packaging, and delivery details are in our Shipping & Delivery Policy at /shipping-policy.

Eligible unopened products may be returned within 7 calendar days of delivery with an RMA. Change-of-mind returns have a 25% restocking fee and the customer pays return shipping. Damaged, incorrect, or lost shipments are covered at no cost when reported promptly. Full details are in our Return & Refund Policy at /returns-refunds.

Yes. We offer competitive bulk and wholesale pricing for research institutions, universities, and high-volume customers. Email info@pepticaribe.com with your peptide requirements, quantities, and any recurring needs for a custom quote. Bulk orders may qualify for expedited processing and dedicated account support.