fda bpc-157 immunogenicity concerns Peptides are all the range and you as the consumer should be informed of current peptide restrictions and potential safety concerns. We are ruled by the FDA. This is a blessing and can be a curse lol. FDA moves BPC-157 to Category

This means more of the active compound is likely to survive and be available for absorption

(1997) BPC-157 reverses haloperidol-induced supersensitivity Biological Psychiatry Tohyama et al

Men frequently ask whether BPC-157 therapy can raise testosterone levels or enhance the effects of testosterone replacement therapy

What a COA Should Include Identity confirmation Mass spectrometry confirming the correct molecular weight (~504 Da for Dihexa) Confirmation that the tested compound matches CAS 1401708-83-5 / PNB-0408 Purity testing HPLC purity reputable listings claim ~98% or higher An HPLC chromatogram showing a single dominant peak, not a cluster of unresolved peaks Contamination testing Residual solvent analysis (especially relevant given DMSO-based transdermal forms) Heavy metals screening where the supplier provides it How to Verify a COA Is Legitimate Match the batch