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Most lots measure above 99% purity by independent HPLC analysis, with identity confirmed by mass spectrometry. A small number of compounds come back in the high 98s. Every lot has its Certificate of Analysis published with the exact figure, whichever way it falls.

Yes, by independent accredited analytical laboratories — primarily Janoshik Analytical. The testing laboratory is named on each certificate rather than left as a generic third-party claim, and every report is downloadable against the lot it describes.

Our peptides are supplied as lyophilized (freeze-dried) powder in sealed vials. This ensures maximum stability and shelf life for research applications.

Store lyophilized peptides at -20°C for long-term storage. Once reconstituted, store at 2-8°C and use within the timeframe specified on the product documentation.

Across the United States, from domestic stock. Parcels are plainly packaged with no branding or contents shown on the outside. Lyophilized compounds are ambient-stable over a domestic transit, so no cold-chain packaging is used or needed — see the shipping page for the detail.

FedEx across the U.S., typically one to three business days, tracked. Orders confirmed before the daily cut-off are dispatched the same business day.

Yes. Mix and match any three vials across the catalog for 5% off, any five for 10% off, or any ten for 20% off — they do not have to be the same compound, and it is applied automatically in the cart. Contact us directly for volumes beyond that.

Due to the nature of research compounds, all sales are final and we do not accept returns. If you experience any issues with your order, please contact our support team and we will work with you to resolve it.

No. All products sold by Eppix Labs are strictly for in-vitro research and laboratory use only. They are not intended for human or animal consumption, therapeutic applications, or self-administration.

There is no credential check at checkout and we will not pretend otherwise. Ordering constitutes your confirmation that the material is for lawful in-vitro research use only, and that attestation is the basis on which it is sold.

A COA is a document from an independent laboratory confirming the identity, purity, and quality of a specific batch. Certificates are published for every batch and can be viewed and downloaded from the product page.