Researchers sourcing Retatrutide for laboratory use have higher quality-verification expectations in 2026 than at any prior point. Life Link Research supplies research-grade Retatrutide with six-panel third-party independent COA on every batch, US domestic shipping, and COA documentation available before purchase. We’re one of the few US vendors stocking this triple agonist (GLP-1R + GIPR + GCGR) with verified documentation.
Specifications
| Compound | Retatrutide |
| Sizes | 15mg ($167), 10mg available |
| Molecular weight | ~4,867 Da |
| Receptor targets | GLP-1R + GIPR + GCGR (triple agonist) |
| Purity | ≥98% by HPLC (third-party independent lab) |
| Quality panel | HPLC + mass spec + endotoxin + sterility + moisture + amino acid composition |
| COA | Available before purchase; batch-matched |
| Shipping | US domestic 2-4 days |
Why Third-Party COA Matters for Retatrutide
Retatrutide synthesis is particularly complex — the triple-agonist structure has tight tolerances. Peptide Sciences’ retatrutide was flagged as potentially counterfeit by third-party testing before that vendor closed. This is exactly the failure mode that independent mass spectrometry catches: verifying the actual compound in the vial matches the theoretical molecular weight (~4,867 Da). Vendor-internal testing missed it; independent testing didn’t.
Research Resources
- What Is Retatrutide? Research Overview
- Retatrutide vs Tirzepatide
- GLP-1 Receptor Biology Guide
- Vendors Still Operating in 2026
FAQs
Is Retatrutide legal to buy for research?
Yes as of May 2026. Retatrutide does not have an FDA-approved equivalent yet — the SAFE Drugs Act (H.R. 6509) targets compounds identical to approved drugs and does not currently affect retatrutide. See our SAFE Drugs Act coverage.
What if my study needs the older retatrutide reference batch?
Verify batch-specific COA before ordering. All our current inventory carries third-party-verified documentation.
For research purposes only. Not for human use.