phospholipid hydroperoxide glutathione peroxidase AffiELISA® Rat peroxidase, nuclear ELISA [Gpx4] The Selenoprotein Glutathione Peroxidase 4:

While this is more of a theoretical concern with robust peptides like BPC-157, it's a principle of good laboratory practice

Chang, C.-H., Tsai, W.-C., Hsu, Y.-H., & Su Pang, J.-H

Velora has not published stability studies on the reconstituted product, so this window should be treated as a laboratory convention rather than a validated shelf life with many labs that limit bacteriostatic water reconstitution to about one month, although peptide-specific stability depends on formulation and has not been comprehensively established for either compound

Discovered in 1973, this tripeptide has accumulated over 40 years of research demonstrating its regenerative properties