The Pep Labs Research Library https://thepeplabs.com/blog/ Source-cited laboratory research reviews, analytical-quality guidance, and study-literacy resources. en-us Fri, 24 Jul 2026 05:17:38 GMT HPLC vs LC-MS for Peptide Testing: What Each Method Shows https://thepeplabs.com/blog/hplc-vs-lcms-peptide-testing-what-each-method-shows/ https://thepeplabs.com/blog/hplc-vs-lcms-peptide-testing-what-each-method-shows/ Sat, 06 Jun 2026 06:59:00 GMT Learn the difference between HPLC and LC-MS in peptide testing, including how HPLC evaluates purity and how LC-MS helps confirm molecular identity for research-use-only materials. How to Read a Peptide COA: HPLC, LC-MS, Purity, and Batch Testing Explained https://thepeplabs.com/blog/how-to-read-peptide-coa-hplc-lcms-purity-batch-testing/ https://thepeplabs.com/blog/how-to-read-peptide-coa-hplc-lcms-purity-batch-testing/ Sat, 06 Jun 2026 00:38:18 GMT Learn how to read a peptide Certificate of Analysis, including HPLC purity, LC-MS identity confirmation, batch numbers, chromatograms, and common COA red flags for research-use-only materials.