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In many peptide assays, using low binding plastics and defined dilution series can reduce adsorption artifacts

The injectable version will have to be injected SUBQ or IM

American Journal of Rhinology & Allergy

This discussion compares tripeptides, exemplified by the well-studied GHK, with larger peptides such as the cyclic heptapeptide CyRL-QN15, the human cathelicidin-derived antimicrobial peptide LL-37, and the peptide Andersonin W-1 (AW1), containing 7, 37, and 72 amino acids, respectively [25, 67, 68]

Success in developing these approaches could transform the clinical utility of peptide therapeutics by eliminating the need for injection