Trying to understand peptide testing better. HPLC tells you purity (what percentage is the target peptide). Mass spec tells you identity (is it actually the right peptide). Both are important. A vendor could have 99% pure powder that's the wrong peptide. Anyone had this happen? Which vendors do both?
Mass spectrometry vs HPLC — what's the difference?
I switched from sema to tirz about 3 months ago. Big improvement in appetite suppression and fewer side effects. Down 37 lbs since switching. Everyone's different but for me it was the right call.
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