They are listed separately to give research buyers a clearer route based on their own ordering requirements
COA & Testing (30%) Per-peptide reports (separate mass spec and HPLC) Third-party labs (Janoshik, MZ Biolabs, Colmaric) Recent (within 6 months) Verifiable task number Both molecular weights confirmed (5,196 Da AND 711.85 Da) Reputation (30%) Community feedback, shipping reliability, customer service, multi-year track record
It fights almost any disease, particularly those associated with aging
PDI is a key enzyme in disulfide bridge formation and is also a component of the enzyme prolyl 4-hydroxylase, which hydroxylates proline residues in collagen, necessary for the assembly and stability of the triple helix of collagen type 2 (ref
PMID 19351840
This uses dissolving microneedle technology, not passive transdermal absorption