Double Tested
RetaGrade.
Research-grade retatrutide.
Proof in every vial.
RetaGrade supplies COA-backed retatrutide for laboratory research use. Every vial is individually sealed, cold-stored, and linked to a batch-specific COA you can verify in seconds.
Batch-Verified
Independent results for every batch
Sealed Vials
Individually sealed for integrity
Cold-Stored
Kept cold through fulfillment
Tracked Delivery
Discreet packaging with tracking
Featured Products
Batch Verification
Enter the COA or lot number printed on your product to check it against our published certificate records.
Verify BatchPublished records only
What the lookup confirms
A successful match displays the public certificate record connected to the number you entered.
Certificate record
Confirms the COA number and publication status.
Batch identity
Shows the lot, product, and strength tied to the record.
Testing details
Displays the reported lab, dates, and results when available.
A database match confirms the published record; it does not authenticate a physical vial on its own.
Third-party commentary
Expert Commentary
Curated outside-creator videos discussing retatrutide research, from physicians, researchers, and clinical specialists. Views are the creators' own — not medical advice, not endorsed by RetaGrade, and not instructions for human use.
Investigational · not FDA-approved
Evidence, clearly graded
See the research behind the headline.
Explore a source-attributed synthesis of published retatrutide trials. Peer-reviewed findings, company disclosures, and open questions are separated clearly, with every headline figure tied to its source.
Explore the research libraryPublished evidence snapshot
Source-linked clinical outcomes
−24.2%
Mean body-weight change
12 mg · 48 wk
NEJM 2023 · phase 2
−82.4%
Relative liver-fat reduction
12 mg · 24 wk · MRI surrogate
Nature Medicine 2024
−1.94%
HbA1c reduction
12 mg · 40 wk
Lancet 2026 · phase 3
86%
Reached <5% liver fat
12 mg · 24 wk
Nature Medicine 2024