PE-22-28 · COA aggregate

Every PE-22-28 COA we've seen

Cross-vendor view of every Certificate of Analysis for PE-22-28: purity distribution, test coverage gaps, recent batches. Sourced back to the original COAs.

Open methodology Lab-verified only No paid placements

COAs ingested

Vendors

99.46%

Avg purity±0.22%

40%

Endotoxin tested

Tested by

Janoshik Analytical3 COAsA Freedom Diagnostics2 COAsA ILS Labs1 COAA BioRegen1 COAA Chromate1 COAA Vanguard Laboratory1 COAA

Purity over time

Each dot is one COA. Color = vendor. The dashed line is a recency-weighted rolling mean (6-month half-life) — it tells you whether testing is trending up or down across the corpus, independent of which vendors happen to have published most recently. Tightly clustered points across many vendors = either real consistency or rubber-stamping; check the individual labs.

By vendor

Vendor	COAs	Avg purity	MS	Endotoxin	Sterility	Metals	Latest
Real Peptides	2	99.46%

Recent batches

Vendor	Lab	Lot	Purity	Tested
Ion Peptide	ILS Labs	PE228-05202026	99.77%	2026-05-29	View
Real Peptides	Freedom Diagnostics	Black Cap	99.46%	2026-05-01	View
Kimera Chems	Freedom Diagnostics	KC-P28-YEL1	99.49%	2026-01-08	View
Peptidegurus	Janoshik Analytical	Jan 12nd 2026	99.32%