SuppliersGuidesBlogContact
Blog

Sourcing Insights

Analysis, guides, and regulatory updates for peptide procurement teams.

April 2026

Peptide Purity Testing Methods

HPLC, mass spec, endotoxin — what each test tells you.

Read →
April 2026

503A vs 503B Explained

Two regulatory frameworks, one critical choice.

Read →
March 2026

FDA Peptide Compounding 2026

The regulatory picture after the HHS reversal.

Read →
March 2026

Best Peptide Supplier 2026

What experienced procurement teams prioritize.

Read →
March 2026

How to Read a Peptide COA

What a COA should contain and how to spot fakes.

Read →
March 2026

5 Red Flags to Walk Away

Warning signs experienced buyers watch for.

Read →