Frequently Asked Questions

Peptides are short chains of amino acids that act as highly specific signaling molecules in biological systems. In research, they work by binding to targeted receptors to modulate cellular pathways, allowing scientists to study processes such as metabolism, tissue repair, and neurological function in laboratory models.

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. All peptides undergo independent third-party testing to verify purity, identity, and quality. Certificates of Analysis from accredited ISO 17025 laboratories are available to confirm that each batch meets strict research-grade standards. All Certificates have tamper-evident results through digitally verifiable reporting. 8x testing is being implemented in our next batch of Certificates of Analysis. Our products are intended strictly for research use only.

Every batch comes with a Certificate of Analysis from an accredited ISO 17025 laboratory. You can view or download COAs on our dedicated COA page. You can also request them anytime by emailing support with your order number. We are rolling out enhanced 8x testing standards on upcoming batches for additional verification.

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 doorstep 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 2-day shipping is $12.00, and shipping is free on orders over $120 before tax. Full carriers, packaging, and international rates are in our Shipping & Delivery Policy at /shipping-policy.

Eligible unopened products may be returned within 14 calendar days of delivery with an RMA. Change-of-mind returns have a 10% 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.