Several analytical approaches have been reported, including UV absorption-based detection (Vaishnavi and Vinayak 2025), radio-labeled substrate methods (Martin et al
Patikorn, C., Saidoung, P., Pham, T
Both incorporate glucagon receptor agonism alongside GLP-1 activity, but retatrutide takes this further by adding a third target -- GIP receptor agonism -- making it the first triple-hormone receptor agonist in clinical development
However, 10 PWS patients showed no significant changes in BMI, weight z -score, and ghrelin when the effectiveness was measured after 6 months of exenatide use, even though improved HbA1c level and decreasing appetite scores were noted [12]
Influencers, however, fall into a different category