In vitro stability assay with high glutathione concentration GLP-1MK-801 was dissolved in dimethyl sulfoxide at a concentration of 0.25 mM and diluted with a solution of 200 mM glutathione in PBS, pH 7, such that the final concentration of GLP-1MK-801 in the assay was 100 M
et al., The New England Journal of Medicine , 2023, 10.1056/NEJMoa2301972 Study Objective To evaluate the efficacy, safety, and dose-response effect of Retatrutide a triple GIP, GLP-1, and glucagon receptor agonist in adults with overweight and obesity
Acta 333 , 1939 (2003)
It's a catastrophic error that is, thankfully, entirely avoidable
As you can see, the more diluent you add, the lower the concentration, and the more volume you need to draw for a specific dose