Researchers who rely on reference peptides for in vitro studies now have a new layer of assurance: every lot from Peptriva is independently re-tested by a third-party U.S. laboratory before it ships. The company, based in Paramount, California, announced today its Dual-Verification Standard, which subjects each product lot to two separate analytical verifications—once at manufacture and again upon arrival at its cold-chain facility in California. The second test is performed by Freedom Diagnostics, an independent U.S. laboratory, and the results are published in a public, batch-searchable Certificate of Analysis (COA) library, allowing any researcher to match the documentation to the exact vial in hand.
The new standard applies to Peptriva's full catalog of 40 research-use-only compounds, including GLP-1 analog reference compounds such as retatrutide, semaglutide, and tirzepatide, as well as cytoprotective sequences, growth-hormone secretagogues, copper peptides, and laboratory consumables. All products are specified at 99% purity or higher. For each lot, researchers receive a manufacturer's COA detailing purity by high-performance liquid chromatography (HPLC), identity by mass spectrometry, heavy-metal screening by ICP-MS, endotoxin testing, and PCR microbial screening. The independent re-test by Freedom Diagnostics covers the same parameters, and both sets of results are linked to the lot number printed on each vial.
"In this industry, purity claims are everywhere and verification is rare," said a Peptriva spokesperson. "We built Peptriva on a simple rule: identity and purity are established analytically, not asserted. Two independent tests per lot, published where anyone can check them—hold us to the third-party numbers."
The Dual-Verification Standard is designed to address a common pain point for researchers who have been burned by suppliers whose certificates don't match the product. By publishing both test results in a searchable online library, Peptriva makes it possible for a researcher to verify, before and after purchase, that the peptide they receive has been independently confirmed. The company notes that its COA library is public and does not require an account to view, and pricing is also visible without registration.
Peptriva's customer-focused policies extend beyond verification. Orders placed before 5 p.m. ET ship the same day from its California warehouse, with free tracked two-day delivery on every U.S. order. The company also offers a 30-day money-back guarantee, underscoring its confidence in the quality of its products. All products are supplied strictly for in vitro laboratory research use only and are not for human or veterinary use. The company's storefront is age-gated to researchers 21 and older.
Researchers interested in reviewing the Dual-Verification Standard or searching the COA library can visit https://peptriva.com. The site provides full details on the testing protocols, the third-party laboratory, and each batch's results.
About Peptriva: Peptriva is a U.S.-based supplier of research-use-only reference peptides, founded on the principle that every purity claim should be independently verifiable. Every lot is verified twice—at synthesis and by an independent third-party U.S. laboratory on arrival—with all results published in a public, batch-searchable Certificate of Analysis library. Peptriva fulfills same-day from California with free tracked two-day U.S. shipping.
Media Contact: Media Relations, Peptriva - [email protected] - https://peptriva.com
Disclaimer: All products referenced are intended solely for in vitro laboratory research and are not intended for human or veterinary use, nor to diagnose, treat, cure, or prevent any disease.
Media Contact
Contact person: Media Relations
Company: Peptriva
Phone: 1-656-269-7377
Website: https://peptriva.com