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The material discussed in research and sold under the BPC-157 name is a synthetically produced 15-residue peptide

That said, high-level or specialized testing (like what might be used in professional sports) could look for substances not included in standard panels

Quality Each batch is verified by HPLC and LC-MS mass spectrometry

doi: 10.3389/fphar.2023.1147414 Received 18 January 2023 Accepted 22 February 2023 Published 02 March 2023 Volume 14 - 2023 Edited by Zhihao Liu, Dalian Medical University, China Reviewed by Ral Gonzalez Ojeda, University of Galway, Ireland Hang Liu, University of California, Los Angeles, United States Updates Copyright 2023 Pei, Pan, Wei and Hua