INTRO New here - digging into GLP-1 peptide purity, COAs, and contamination risks

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citric.acid

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Mar 20, 2026
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Hello. I go by @citric.acid and I'm based in Central Europe. Right now, most of my focus is going toward the quality and safety side of research peptide choices. More precisely, I'm looking into purity testing, contaminant profiling, how to interpret a CoA, and which third-party labs can genuinely be trusted. I plan to read extensively before contributing much, but I'm glad to jump in whenever things turn analytical. Nice to meet you all.
 
Just a heads up that I'm new to this, so don't put too much weight on what I say. Based on what I've read so far, a COA doesn't really prove anything, since it's possible to pick one vial that tests better than the rest of the batch. Still, having one is a plus.
 
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