Frontiers Using sodium glycodeoxycholate to develop a temporary infant like gut barrier model, in vitro BPC 157 Guide: How Long Does It Stay in Your System? Multi analyte screening of small peptides by alkaline pre activated solid phase extraction coupled with liquid chromatography high resolution mass spectrometry in doping controls ScienceDirect A broad spectrum peptide screening method using an optimized solid phase extraction and liquid chromatography high field asymmetric ion mobility spect Analytical Methods (RSC Publishing) DOI:10.1039 D4AY01477D