Excalibur Peptides is a US-based research peptide supplier built around a single operating principle: every batch shipped to a laboratory should be accompanied by independent, batch-level analytical data that a researcher can verify before opening the vial. The catalog covers the core compounds most commonly cited in preclinical peer-reviewed work — BPC-157, TB-500, GHK-Cu, Tesamorelin, GHRP-6, MOTS-c, NAD+, LL-37, GLP-2 T, GLP-3 R, and curated research bundles (Wolverine Blend, KLOW Blend) — and the operational footprint is structured for researchers who need a reliable, fully operational domestic supply line.
Excalibur Peptides synthesizes, characterizes, and ships research-grade peptide reference standards intended for in-vitro laboratory research and identification purposes only. Every product is sold under strict research-use-only terms. We do not provide reconstitution protocols, dosing guidance, or any form of human-use documentation. The compounds in the catalog are sold to researchers — universities, independent laboratories, biotech companies, and qualified independent investigators — for laboratory experiments that produce data, not for personal use.
The operational footprint is intentionally narrow. Excalibur does not sell consumer wellness products, does not market toward human consumption, and does not provide clinical advice of any kind. The catalog is curated around compounds with established preclinical research literature so that researchers ordering from Excalibur can cite peer-reviewed mechanistic work, design experiments against published pathway data, and reproduce results from prior literature with confidence in the identity and purity of the material they are using.
Every batch of every compound in the Excalibur catalog is third-party tested to a minimum standard of ≥99% purity by reverse-phase HPLC, with identity confirmed by liquid chromatography–mass spectrometry (LC-MS) against the published molecular weight of the target peptide. Testing is performed by a named independent analytical laboratory — the lab name appears on the Certificate of Analysis (COA) for every batch, not just in marketing copy. This matters because anonymous "third-party tested" claims cannot be audited; named labs can. The COA records the batch number, the date of testing, the method employed, the observed purity percentage, and the observed mass against the calculated mass.
COAs are publicly accessible without account registration through the COA database on this site. Researchers can verify a specific lot before purchase, archive the COA alongside their experimental records, and cite the lot number, vendor name, and COA reference in the methods section of any downstream publication. This level of documentation is the baseline for reproducible peptide research and the standard Excalibur Peptides operates under for every product in the catalog.
Excalibur Peptides ships from a US fulfillment center with same-day processing for orders placed before the daily cutoff. Domestic delivery is 2–4 business days via temperature-controlled shipping, which preserves the cold chain for lyophilized peptides and avoids the customs delays and temperature excursions that plague international shipments. Customer support is active and reachable at info [at] excaliburpeptides [dot] com. There are no announced operational changes, no payment-processor disruptions, and no migrations in progress that would interrupt active research orders.
All Excalibur Peptides products are sold strictly for in-vitro laboratory research and identification purposes. The compounds are not approved by the FDA for human use, are not intended for veterinary administration, and are not intended for any clinical application. Buyers are required to certify research-use-only status at checkout. The site does not host reconstitution guides, dosing calculators, or human-use protocols. This compliance posture is both a regulatory requirement and an internal discipline that keeps the catalog focused on what laboratories actually need: reliable reference material with verifiable identity and purity.
The current research catalog includes BPC-157 (pentadecapeptide, FAK-paxillin and NO-system signaling), TB-500 (Thymosin Beta-4 fragment, actin sequestration), GHK-Cu (copper tripeptide, ECM remodeling and gene regulation), Tesamorelin (GHRH analog), GHRP-6 (ghrelin receptor agonist hexapeptide), GLP-2 T (dual GIP/GLP-1 receptor agonist for metabolic research), GLP-3 R (triple GIP/GLP-1/glucagon receptor agonist), MOTS-c (mitochondrial-derived peptide), NAD+ (essential redox coenzyme and sirtuin substrate), LL-37 (cathelicidin antimicrobial peptide), and the curated Wolverine Blend (BPC-157 + TB-500) and KLOW Blend (BPC-157 + TB-500 + GHK-Cu + KPV) research bundles. Every entry in the catalog meets the same ≥99% HPLC purity floor and ships with a batch-level COA.