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This independent HPLC lab test confirms Retatrutide 13mg from BetterBio Synthesis at 99.639% purity. The analysis was conducted by Janoshik Labs on October 3, 2025.
Retatrutide is a GIP/GLP-1/GCGR receptor triagonist researched for its role in weight management, metabolic regulation, and glycemic control. A purity level of 99.639% indicates minimal contamination and high-grade synthesis.
The full certificate of analysis is available for download on this page.

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