Vendor profile
Harbor Peptide Supply
High-volume catalog with open pricing tables
Harbor Peptide Supply can work for price-sensitive research purchasing when the buyer is willing to request lot paperwork before checkout.
Testing notes
COAs available on request for some lots; not every SKU publishes a public PDF at time of UPV review.
Shipping
Fast US shipping claims; international options limited
Payments
Cards, ACH, and crypto rails commonly advertised
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