Head-to-Head Peptide Vendor Comparisons: The Full Index

These are the comparisons where we’re not in the picture at all.

Sometimes the vendor you’re weighing up isn’t us, and a comparison written by one of the two companies involved is worth roughly what you’d expect. So we applied our own five-point documentation standard to pairs of other suppliers and published the result without putting ourselves in the table. The columns are the two vendors. Our name appears once in each post, in a line explaining where the standard came from, and nowhere else.

The value of these is that they’re boring and checkable. Each one records what each site stated on the day it was reviewed, attributed to the site, with gaps scoped and dated rather than turned into an accusation. If you want to know which of two suppliers documents its lots more thoroughly, that’s the question these answer.

The standard everything below is measured against

Five questions, applied the same way every time. Does the supplier state that it synthesizes the material, or that it sources it? Is the testing laboratory named? Does the panel cover identity, purity, bacterial endotoxin and sterility, or purity alone? Is a batch certificate readable before you pay, tied to the lot number on the vial? And for blends, are the milligrams disclosed per component?

Blank Peptides publishes its own lots against that standard: an own cGMP laboratory that compounds, fills, finishes and labels each lot; Freedom Diagnostics and Horizon Analytical named as the testing laboratories; a full panel per lot covering identity, >99% purity, bacterial endotoxin and sterility; and a batch certificate of analysis for every lot, with the lot number printed on the vial.

The index

Biotech Peptides

Core Peptides

Limitless Life Nootropics

Peptide Vault

Phoenix Peptide

Pure Rawz

Sports Technology Labs

Swiss Chems

The hubs behind this index

The other indexes

For research use only. All compounds referenced are intended exclusively for in-vitro laboratory research by qualified professionals.

Written by Blank Peptides Research Team

Peptide science researchers with 5+ years in US-based peptide manufacturing, independent HPLC and mass spectrometry testing, and research education. All content is reviewed for scientific accuracy before publication.

REVIEWED BY

Dr. Tobias S — PhD Chemist, Peptide and Unnatural Amino Acid Synthesis

Dr. Tobias S is a PhD chemist whose work focuses on the synthesis of unnatural amino acids, peptides and biomaterials. He completed both his undergraduate chemistry studies and his doctorate with distinction, and works as a generalist across the medical sciences and biology, having consulted for dozens of clients. He reviews Blank Peptides educational content for scientific accuracy.

Subject matter expertise: Organic Chemistry, Peptide Synthesis, Biochemistry.