Glutathione · COA aggregate

Every Glutathione COA we've seen

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

Open methodology Lab-verified only No paid placements

COAs ingested

Vendors

99.60%

Avg purity±0.35%

53%

Endotoxin tested

Tested by

Freedom Diagnostics23 COAs Kovera Labs9 COAsA Janoshik Analytical5 COAsA Vanguard Laboratory4 COAs ILS Labs2 COAsA Bioviridian1 COA

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
Ion Peptide	13	99.78%

Recent batches

Vendor	Lab	Lot	Purity	Tested
Certified Peptides	Vanguard Laboratory	GLUT2026	—	—	View
Sunrise Bioresearch	Freedom Diagnostics	GLU1500JAN26-01	99.92%	—	View
Kimera Chems	Vanguard Laboratory	Black Cap	—	—	View
Glacier Aminos	—	—	—	—