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Frequently Asked Questions

Everything you need to know about ordering research compounds from RexPeps.

Products & Research

All compounds sold by RexPeps are strictly for in vitro laboratory research use only. They are not intended for human or animal consumption, and they are not drugs, supplements, or food products. By purchasing from RexPeps, you confirm that all products will be used solely for legitimate scientific research purposes.
Every compound undergoes independent third-party analytical testing before release. We use HPLC (High-Performance Liquid Chromatography) and mass spectrometry to verify identity, purity, and absence of impurities. Results are documented in a batch-specific Certificate of Analysis (COA) that you can download from our COA Library.
A COA is an independent laboratory document that verifies the identity, purity, and quality of a specific batch. Each COA includes HPLC purity data, mass spectrometry confirmation, the testing lab name, test date, and batch number. We provide batch-specific COAs, not generic certificates, so every document traces to the exact lot you receive.
No. These compounds are not evaluated or approved by the FDA. They are intended strictly for in vitro laboratory research and are not for human or animal consumption. They are not marketed, sold, or presented as drugs, dietary supplements, or food products.

Ordering & Shipping

Yes. At this time, RexPeps ships domestically within the United States only. All orders are processed and fulfilled from our USA-based facility. Orders typically ship within 48 hours of payment confirmation. Free shipping is available on orders over $199 with code RXSHIP.
Orders are processed within 1–2 business days. Standard shipping within the continental U.S. typically takes 3–5 business days after dispatch. All packages are shipped in discreet, unmarked, tamper-evident packaging. You will receive tracking information by email once your order ships.
We accept major credit and debit cards processed through our secure payment gateway. All transactions are encrypted and your payment information is never stored on our servers. For bulk or institutional orders, contact us directly at [email protected] to discuss payment options.

Returns & Support

All sales are final due to the nature of research materials. We cannot accept returns once a product has shipped. If you receive a damaged shipment or have a documentation concern, contact us directly at [email protected] within 48 hours of delivery and we will work to resolve the issue promptly.
You can reach us at [email protected] or use the form on our Contact page. We respond to all inquiries within 24 hours during business days (Mon–Fri, 9AM–5PM CT). For fastest resolution on order-related questions, include your order number in the subject line.
Yes. We welcome inquiries from universities, research institutions, and laboratories requiring bulk quantities. Contact us at [email protected] with details about the compounds and quantities you need, and we'll provide a custom quote.

Still have questions?

Our support team is available Monday through Friday and responds within 24 hours.

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Prompt Responses

All inquiries answered within 24 hours during business days.

Research First

Every decision we make prioritizes compound quality and researcher needs.

Compliance Always

Full regulatory compliance. No health claims. Research use only.

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