COA transparency
All 18 products are third-party tested by Freedom Diagnostics Testing, with each COA published in a public COA database. Review them before you order.
Core Peptides alternative
If you're evaluating Core Peptides for laboratory research procurement, Excalibur Peptides is a US-based supplier with published third-party COAs, a public COA database, and same-day domestic fulfillment.
For research and identification purposes only. Not for human consumption.
Core Peptides is one of the names researchers encounter when sourcing research peptides in the United States. When comparing suppliers, three things are worth weighing: catalog overlap, documentation transparency, and shipping reliability.
Excalibur Peptides was built around those same three criteria. We carry the core research compounds — BPC-157, TB-500, GHK-Cu, Tesamorelin, GHRP-6, NAD+ — and publish independently generated Certificates of Analysis for all 18 products (HPLC purity; LC-MS identity) in a public COA database.
Operations are domestic: Austin, Texas, with same-day order processing on in-stock compounds and 2–4 business day delivery within the United States. No international shipping. For research and identification purposes only.
For research and identification purposes only. Not for human consumption.
Choosing a research peptide supplier involves more than price. A handful of procurement questions apply to any vendor: whether COAs are published or emailed on request, how the document on file relates to the material received, stock continuity on staple compounds like BPC-157 and TB-500, and lead times when a study timeline is fixed.
Excalibur answers each of those questions up front. Certificates of Analysis issued by an independent laboratory are published in a public database, listed by product, and vial labels carry a printed batch number for laboratory records — researchers can review the documentation before placing an order, not after.
Orders placed before 2 PM EST on a business day ship the same day from Austin, Texas. That matters when a procurement window for a cell-signaling or receptor-binding study is measured in days, not weeks.
Before any lab moves a recurring order, the standard audit checklist is short: does the vendor publish a COA for the compound, is the testing performed by an independent third-party lab rather than in-house, does the analytical package include both HPLC for purity and an identity test such as LC-MS or FTIR, does each vial carry a batch number that can be recorded in the lab notebook, and is the supplier transparent about the research-use-only classification of the product.
Excalibur documents its answers publicly. The COA database lives at /coa, the analytical methods are listed on each published certificate, and the research-use-only designation is stated on every product page and at checkout. The catalog contains no human-use instructions or administration guides, consistent with the research-chemical category.
Supplier criteria to review before placing a procurement order. Excalibur entries describe our own documentation.
| Criterion | Excalibur Peptides | Core Peptides |
|---|---|---|
| COA Issuance | Independent third-party lab, published online | See vendor's current documentation |
| Purity Reporting | HPLC result on each published product COA | See vendor COAs |
| Identity Confirmation | LC-MS, per the COA | See vendor COAs |
| COA Database | Public, listed by product | See vendor site |
| Shipping Origin | Austin, Texas — domestic only | See vendor policy |
| Order Processing | Same-day on in-stock, before cutoff | See vendor policy |
| Payment Methods | Cards, Apple Pay, Venmo, Cash App, crypto | See vendor checkout |
| Catalog Overlap | BPC-157, TB-500, GHK-Cu, Tesamorelin, GHRP-6, NAD+, MOTS-C, LL-37, blends | See vendor catalog |
| Research-Use-Only Disclosure | Stated on every product page and at checkout | See vendor site |
Excalibur entries describe our own documentation. For other suppliers, review their current published documentation directly; we make no claims about other vendors. For research and identification purposes only.
Every product in the Excalibur catalog is analyzed by an independent third-party laboratory: all 18 by Freedom Diagnostics Testing. The HPLC purity result is reported on each product's published Certificate of Analysis, next to the identity result (LC-MS), and the certificate names the laboratory that performed the work.
Core research compounds in the Excalibur catalog. All 18 products are third-party tested; each product's COA is published in the COA database.
All 18 products are third-party tested by Freedom Diagnostics Testing, with each COA published in a public COA database. Review them before you order.
Ships from Austin, TX. Same-day order processing on in-stock compounds with 2–4 day domestic delivery.
Purity by HPLC; identity by LC-MS (Freedom Diagnostics Testing), as reported on each product's published COA. Full documentation at /coa.
All products for research use only. Not for human consumption.
Excalibur Peptides is a separate US-based supplier. Its catalog includes BPC-157, TB-500, GHK-Cu, Tesamorelin, GHRP-6, NAD+, MOTS-C and LL-37, with third-party COAs published publicly. Research use only.
All 18 Excalibur products are analyzed by an independent third-party laboratory, Freedom Diagnostics Testing: HPLC for purity, and LC-MS for identity. Each product's COA is published in our COA database.
All orders ship from Austin, Texas. Same-day processing on in-stock items, 2–4 business day domestic delivery with tracking. Every product is stored frozen at −10 °F until the day it ships.
We accept credit and debit cards, Apple Pay, Venmo, Cash App and cryptocurrency.
No. All products are sold strictly for in-vitro laboratory research and identification purposes. Not for human consumption.
The Excalibur catalog includes cell-signaling and receptor-research staples — BPC-157, TB-500, GHK-Cu, Tesamorelin, GHRP-6, NAD+, MOTS-C, LL-37 — plus blends such as Wolverine and KLOW. Compare it with your current order list; each product page shows the product's current availability.
Provided your methods specify purity and identity requirements (an HPLC purity specification and confirmed identity), compare them with the Certificate of Analysis published for each Excalibur compound before switching. The COA reports the HPLC result and the identity check (LC-MS).
In-stock items ordered before the daily cutoff ship the same business day from Austin, Texas. Domestic transit is generally 2–4 business days.
Yes. The public COA database at /coa lists the published Certificate of Analysis for each of the 18 products, so researchers can pull the analytical report directly without contacting support. The batch number printed on the vial can be recorded separately in your lab records.