Frequently asked questions

X Factor Peptides is a US-based supplier of research-grade peptide reference standards for Research Use Only (RUO). Every vial ships with the actual HPLC purity certificate for that specific lot. We are not a pharmacy, not a compounder, and we do not sell for human consumption.

Yes. Every vial ships with the actual HPLC chromatogram for its specific lot, signed and dated. COAs are also publicly searchable at /coa by lot number — you do not need to be a customer to view them.

RUO means the material is intended for in-vitro or pre-clinical research only. It is not approved for diagnostic procedures, therapeutic use, food, cosmetics, or human consumption. Every order requires you to attest to RUO use at checkout.

Currently US-only. Some peptides are subject to US Export Administration Regulations and we do not ship to sanctioned jurisdictions. See /legal/EXPORT for the full list.

Lyophilized peptides ship at ambient temperature and should be transferred to −20°C upon receipt for long-term storage. Once reconstituted with bacteriostatic water, store at 2–8°C and use within 30 days. See /reconstitution for the full handling guide.

Currently cryptocurrency via Coinbase Commerce (BTC, ETH, USDC, USDT, others). Credit card processing for institutional accounts is under merchant underwriting. Standard payment processors (Stripe, PayPal, Square) reject RUO research-supply businesses, so we use compliant alternatives. Wholesale buyers can request net-30 invoicing at /wholesale.

Unopened vials within 14 days for a refund minus shipping. Opened vials, products past their stability window, and lots whose COA was independently verified are non-refundable. Full policy at /legal/REFUND and the returns portal at /returns.

These are not for human use. They are research reagents. We do not provide dosing recommendations, treatment claims, or any medical guidance. Consult a licensed physician for medical questions. Misuse violates our Terms of Service and the RUO attestation you sign at checkout.

In-stock orders ship from our Maryland facility within 1 business day, USPS Priority or UPS Ground (your choice at checkout). Tracking emailed within 24 hours of fulfillment. Backorders and custom-lot requests have a separate timeline disclosed at order time.

Yes. The institutional inquiry form at /wholesale collects PI name, institution, intended use, and volume estimate. Bulk pricing, net-30 terms, custom synthesis, and white-label COAs are available for verified academic, biotech, and clinical research buyers.

A generic spec sheet says what the peptide is supposed to look like. A per-lot HPLC chromatogram shows what your specific vial actually contains — area-under-the-curve purity for the parent peak, plus any impurity peaks. If a researcher cannot tie a chromatogram to the lot in their hand, the data is unverifiable. We made the per-lot COA a non-negotiable.

Quality issues: compliance@xfactorpeptidelab.com with the lot number, photo of the vial, and a description of the issue. Security vulnerabilities: security@xfactorpeptidelab.com — full disclosure policy at /legal/SECURITY.md.