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Oxytocin delivered nasally or intraperitoneally reaches the brain and plasma of normal and oxytocin knockout mice
Key quality indicators to look for include third-party testing with certificates of analysis (COA) showing purity above 98%, proper lyophilization (the powder should be a clean, white cake, not a yellow or clumpy mass), appropriate packaging (amber vials to protect from light degradation), and clear labeling including peptide identity, mass, lot number, and expiration date
Our vials are made of amber glass, which blocks about 66% of light
Compounded semaglutide GLP-1, on the other hand, offers customization but lacks the high level of regulatory oversight and consistency associated with brand-name formulations
In the latter location, they are typically of the poorly differentiated, small cell subtype
