Vendor Comparison
CertaPeptides vs Peptidwerk
An independent side-by-side of two COA-verified research-peptide vendors – verification, purity, shipping and live price per mg on the 13 products they both carry. For laboratory research use only.
AttributeCertaPeptidesPeptidwerk
Purity score—99.5 %from 17 batches
Ships to2 regions1 region
Discount—10%
COA-verified
Founded20262026
Price per mg on shared products
PeptideCertaPeptidesPeptidwerk
5-Amino-1MQ 5mg$6.94$1.46
BPC-157 10mg$6.36$3.64
DSIP 5mg$6.48$5.20
Epitalon 10mg$3.47$2.29
GHK-Cu 100mg$0.81$0.57
KPV 10mg$5.44$5.20
MOTS-c 10mg$2.99$2.60
MT-2 (Melanotan 2 Acetate) 10mg$4.05$3.64
PT-141 10mg$4.86$3.43
Retatrutide 10mg$6.39$5.55
Selank 10mg$4.24$3.12
Semax 10mg$4.24$3.12
Thymosin Alpha-1 10mg$9.26$4.16