I am new to this forum but have been testing sermorelin and semaglutide (and have Melanotan II and CJC 1295 DAC which I have not tested either as of yet) all sourced from one of the vendors on this forum, PeptideSciences. I was curious if anyone had any information on their experiences with efficacy/purity on any of these products specifically (or others) being sourced through them? I did some extensive research on legitimate/trusted vendors prior to finding this forum and I found their website information to seem to be the most scientifically backed and appreciated that they show their Certificate of Analysis, Chromatography and Mass Spectrometry for each of their products but just wanted input from others within the community with experience sourcing through this company since I found them listed on here but through searching forums and lab tests hadn't seen anything specifically about peptide testing done on their company's products. 

**I hope I am abiding by the rules of the forum as this is my first time using it and I read the guidelines multiple times before posting this.