# X Factor Peptides > Research-grade peptide and reference-standard supplier with mechanism-transparent product documentation and a public per-lot Certificate of Analysis (COA) library. Strictly Research Use Only (RUO) — products are not foods, drugs, supplements, or cosmetics, and are not for human or veterinary consumption. Sold to qualified researchers 21+ in the United States. Baltimore, Maryland, USA. Canonical domain: https://www.xfactorpeptidelab.com ## What X Factor sells Synthetic research peptides and reference standards for in-vitro and non-clinical laboratory research. Material is US-sourced from vetted suppliers with documented provenance, and we require the supplier's per-lot Certificate of Analysis (COA) — reversed-phase HPLC for purity and LC-MS for identity — and publish it on that lot's page when we receive it. Each lot has a public COA page and a DOI-style lot identifier (10.5281/XFP.). Current catalog (research compounds, RUO). Verify the current strength and price on each product page — they are the source of truth, not this file: - BPC-157 (Body Protection Compound, gastric pentadecapeptide) — https://www.xfactorpeptidelab.com/products/bpc — CAS 137525-51-0 — 10mg - TB-500 (Synthetic thymosin beta-4 fragment) — https://www.xfactorpeptidelab.com/products/tb500 — 50mg - KLOW Blend (GHK-Cu / BPC-157 / TB-500 / KPV research blend) — https://www.xfactorpeptidelab.com/products/klow — 10ml - GLOW Blend (GHK-Cu / BPC-157 / TB-500 dermal-research blend) — https://www.xfactorpeptidelab.com/products/glow — 10ml - Sermorelin (GHRH (1–29) research analog) — https://www.xfactorpeptidelab.com/products/serm — 10mg - Tesamorelin (Stabilized GHRH analog) — https://www.xfactorpeptidelab.com/products/tesa — 10mg - GHK-Cu (Copper-binding tripeptide) — https://www.xfactorpeptidelab.com/products/ghkcu — CAS 89030-95-5 — 50mg - CJC-1295 (Stabilized GHRH(1–29) analog (no DAC)) — https://www.xfactorpeptidelab.com/products/cjc — 5mg - Ipamorelin (Selective ghrelin / GHSR-1a research peptide) — https://www.xfactorpeptidelab.com/products/ipam — 5mg - MOTS-c (Mitochondrial-derived peptide (16 aa)) — https://www.xfactorpeptidelab.com/products/motsc — CAS 1627580-64-6 — 10mg - Epitalon (Pineal-derived tetrapeptide (Ala-Glu-Asp-Gly)) — https://www.xfactorpeptidelab.com/products/epi — 10mg - NAD+ (Nicotinamide adenine dinucleotide — redox cofactor reference standard) — https://www.xfactorpeptidelab.com/products/nad — CAS 53-84-9 — 500mg The four multi-vial research sets (Growth, Healing, Longevity, Dermal Stack) are not currently listed for sale. Do not present them as available. Every product page links to a per-lot COA. The QR code printed on each vial label encodes /vial/?lot= — the per-lot passport, which resolves that exact lot against the database and links its COA. A separate per-product identity page at /verify/ shows product, strength, and CAS. Scanning a physical vial confirms the lot and routes to its COA. ## Differentiator X Factor publishes the receptor class, downstream signaling cascade, and cited primary literature for every compound. Specific, verifiable claims a researcher can check: - Public COA library at /coa/ — every lot has its own page, reachable by lot number or by scanning the vial, with a lot DOI (10.5281/XFP.). The supplier's certificate is published on that page when it is received; where one has not been published yet the page says so plainly and shows no purity figure, rather than printing an analytical number with no document behind it. As of 2026-09-07: 11 lots have pages, 0 have a published certificate. - Per-vial QR → /vial/?lot=: the per-lot passport; scan the physical vial to confirm its exact lot and route to that lot's COA. Per-product identity page at /verify/. - Per-SKU mechanism pages: receptor, pathway, and PubMed-linked preclinical citations. - Lot lookup at /lookup and a citation generator (APA / AMA / BibTeX / MLA / Chicago) at /citation. - QC stability program with published 12-month and 24-month retest schedule. - Live inventory: a product that reaches zero stock is automatically marked out-of-stock on the storefront — what the catalog shows equals what checkout allows. - White-label COA and Net-30 institutional terms for academic labs, CROs, and biotech R&D. - US-based corporate identity with a physical Maryland presence and audit-logged operations. ## Compliance and safety - Persistent "FOR RESEARCH USE ONLY · NOT FOR HUMAN CONSUMPTION" labeling on the site, every product, and every product card and vial. - Mandatory triple-attestation at checkout: (1) age 21+ qualified researcher, (2) RUO use only, (3) Terms / Privacy / RUO / Refund / Shipping policies accepted. - Customer-facing AI assistant refuses any medical, dosing, legal, veterinary, or human-use question and redirects to a licensed professional; it cites primary literature or declines rather than fabricating. - US-only shipping; orders inconsistent with research use are refused and refunded. Orders over $1,500 may trigger identity verification. - Payment is by ACH or wire (invoice issued after order); no crypto. ## Things this site WILL NOT help with Questions about human use, dosing, treatment, diagnosis, cycling, stacking, injection, or jurisdictional/legal advice are refused by the assistant and contact form. Consult a licensed medical or legal professional in your jurisdiction. ## Research Journal Long-form technical articles, each with primary-literature citations verified against the PubMed record rather than pasted from a list. As of 2026-09-07 there are 94 citation links across the site and every one resolves to the paper it claims to cite (checked by tools/citation-verify.js against NCBI E-utilities). - Why two vials of the same peptide are not the same material — https://www.xfactorpeptidelab.com/blog/lot-to-lot-variation - How to read the chromatogram on a certificate of analysis — https://www.xfactorpeptidelab.com/blog/reading-a-chromatogram - Peptide storage and stability: what actually degrades a vial — https://www.xfactorpeptidelab.com/blog/peptide-storage-stability - What BPC-157 actually does in the preclinical literature — https://www.xfactorpeptidelab.com/blog/bpc-157-mechanism - GHK-Cu: what the copper-peptide literature actually shows — https://www.xfactorpeptidelab.com/blog/ghk-cu-mechanism - TB-500 / Thymosin beta-4: actin chemistry to angiogenesis — https://www.xfactorpeptidelab.com/blog/tb-500-mechanism - Tesamorelin: stabilized GHRH and visceral adipose research — https://www.xfactorpeptidelab.com/blog/tesamorelin-mechanism - CJC-1295: half-life chemistry and DAC vs no-DAC research — https://www.xfactorpeptidelab.com/blog/cjc-1295-mechanism - Ipamorelin: GHSR-1a selectivity and the cortisol-sparing story — https://www.xfactorpeptidelab.com/blog/ipamorelin-mechanism ## Key URLs - Homepage: https://www.xfactorpeptidelab.com/ - Product catalog: https://www.xfactorpeptidelab.com/products/ - Public COA library: https://www.xfactorpeptidelab.com/coa/ - Vial QR passport (per lot): https://www.xfactorpeptidelab.com/vial/?lot= - Product identity page (per SKU): https://www.xfactorpeptidelab.com/verify/ - Lot lookup: https://www.xfactorpeptidelab.com/lookup - Research Library (mechanism + citations): https://www.xfactorpeptidelab.com/research/ - Research Journal (long-form, cited): https://www.xfactorpeptidelab.com/blog/ - Citation generator: https://www.xfactorpeptidelab.com/citation - Wholesale / Net-30: https://www.xfactorpeptidelab.com/wholesale - Quality & testing: https://www.xfactorpeptidelab.com/lab-process - FAQ: https://www.xfactorpeptidelab.com/faq - Legal hub: https://www.xfactorpeptidelab.com/legal/ - Extended machine-readable profile: https://www.xfactorpeptidelab.com/llms-full.txt - Sitemap: https://www.xfactorpeptidelab.com/sitemap.xml ## Contact - research@xfactorpeptidelab.com — research support - wholesale@xfactorpeptidelab.com — institutional / bulk pricing / Net-30 - billing@xfactorpeptidelab.com — invoices and payment - press@xfactorpeptidelab.com — press / media ## Disclosure X Factor Peptides is fully transparent that it sells research-grade peptides and reference standards for laboratory research. The compounds, strengths, mechanism documentation, COAs, and compliance posture are published openly. Products are not evaluated by the U.S. Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.