A US research-peptide supplier that shows its work.
X Factor Peptides ships research-grade peptides for in-vitro and non-clinical research only. Every product page lists the receptor, the cited primary literature, the lot, the expiry, and the third-party HPLC purity. Buyers attest at checkout. Every admin action is audit-logged. We don't dispense dosing or treatment guidance, and we say so on every page.
Source, test, package, ship.
- Source. US-based fulfillment partner with material from US-registered manufacturers.
- Test. Independent third-party HPLC + LC-MS on every lot. COA per lot.
- Package. Sealed glass vial, butyl stopper, crimp cap. Discreet outer packaging. Cold-pack on request.
- Ship. 3–7 business day USPS / UPS. Tracking emailed. COA emailed with shipment.
- Document. Every order, attestation, lot, and admin action is logged for SOC-2-ready compliance.
No dosing. No diagnosis. No human-use claims.
- No medical advice. Our chatbot, support, and product copy are linted for medical and dosing language. Replies that contain it are blocked at the gate.
- No prescription substitute. Our materials are not a prescription drug, not a supplement, not a cosmetic, not a food.
- No paid promotion outside RUO. Affiliates must disclose under FTC rules. Marketing for human use forfeits the account.
- No B2C disguised as B2B. Wholesale is for qualified institutional buyers only.
- No quiet PII collection. First-party cookies only. CCPA disclosure on the home page.
Why I built X Factor.
I ordered my first research peptides for an in-vitro project six years ago. The vial showed up with no lot number, no certificate, and a label that read "PEP-1." The packaging tape was the same color as the masking tape on my pipettes — that was the level of operational seriousness I was buying into.
The compound itself was probably fine. The way it was sold wasn't. The peptide-research community has put up with this for a decade because the alternative was paying 4× the price to a reagent supplier with a procurement portal and a 6-week lead time. That is the gap X Factor fills.
We do four things differently. The lot is printed on the vial and matched to a public COA. The mechanism page on every SKU lists the receptor class and cited primary literature, not marketing language. The supply chain is US-sourced and US-tested with the lab contracted on a name-and-address basis, not "an independent lab." And every admin action ships with an audit log because chain of custody is the thing the FDA and your IRB care about when they ask.
If you are a qualified researcher 21+ ordering for a real preclinical or in-vitro study, this is the supplier I wish I had six years ago. If you are looking for anything other than RUO research material, this is not the place.
A small, US-based operating team.
Our team comes from biotech operations, regulated e-commerce, and lab procurement. We chose a small, US-based footprint on purpose so every shipment is traceable to a person, not a forwarder.
Talk to us directly.
Press, partnership, lab-supply, and investor inquiries route to a named contact. We answer within one business day. Open the contact form or write to press@xfactorpeptidelab.com.