Direct glutathione quantification in human blood by LC-MS/MS: comparison with HPLC with electrochemical detection J Pharm Biomed Anal 11 September Sep 2012 13 years ago Squellerio I, Caruso D, Porro B, Veglia F, Tremoli E, Cavalca V http://www.ncbi.nlm.nih.gov/pubmed/22947504