Best Retatrutide Companies, Independently Tested & Ranked

Institute
Top Rated Retatrutide

Ranked #1 of 11

Apex Peptides

Research-compound supplier with published third-party COAs and consistent independent testing performance.

98.3% average purity across 3 samples
99.5% average content accuracy vs. label
Most recent sample tested Mar 10, 2026

View full profile Read the lab report

91 Exceptional 90–100

Full Retatrutide rankings

Scoring methodology →

Rank	Company	Index Score™	Purity & Testing	Product Accuracy	Transparency	Fulfillment	Customer Experience	Value	Samples
1	Apex Peptides Exceptional	91	99	90	90	89	84	81	3
2	Research Peptides Co. Exceptional	90	98	91	84	86	90	88	2
3	Verity Research Chemicals Exceptional	90	98	90	92	81	85	80	2
4	Lumen Research Supply Excellent	89	99	92	80	77	91	91	1
5	PureSci Labs Excellent	89	99	92	95	76	80	78	2
6	BioRegen Research Excellent	87	99	89	82	85	78	76	2
7	Cardinal Metabolic Clinic Excellent	87	98	84	88	78	89	75	1
8	NextGen Peptides Excellent	85	91	80	80	90	86	84	2
9	Northwind Telehealth Excellent	84	81	82	90	83	92	72	2
10	Helix Research Supply Good	79	87	73	68	84	82	78	2
11	Vector Peptide Supply Good	70	89	66	52	74	68	66	2

Scores combine six weighted dimensions: Purity & Testing (25%), Product Accuracy (20%), Transparency (20%), Fulfillment (15%), Customer Experience (10%), Value (10%). A company appears here only if the Institute has independently tested Retatrutide purchased from it.

Retatrutide researchEvidence, mechanism, dosage research and studies Testing databaseEvery published lab report, with full methodology All rankingsOverall and category leaders across the Index

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Best Retatrutide companies

Apex Peptides

Full Retatrutide rankings

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