Vendor Comparison
BioCollex vs Peptidwerk
An independent side-by-side of two COA-verified research-peptide vendors – verification, purity, shipping and live price per mg on the 9 products they both carry. For laboratory research use only.
AttributeBioCollexPeptidwerk
Purity score—99.5 %from 17 batches
Ships to4 regions1 region
Discount15%10%
Founded20252026
COA-verified
Price per mg on shared products
PeptideBioCollexPeptidwerk
GHK-Cu (3 x 50mg)$0.61$0.57
KLOW (3 x 80mg)$0.77$1.30
MOTS-C (3 x 10mg)$3.44$2.60
NAD+ (3 x 500mg)$0.08$0.10
PT-141 (3 x 10mg)$3.44$3.43
Retatrutide (3 x 10mg)$5.35$5.55
Selank (3 x 10mg)$3.44$3.12
Semax (3 x 10mg)$3.44$3.12
Tesamorelin (3 x 10mg)$4.59$5.20