Chromatography was performed on an HSS-T3 C18 column with a total run-time of 5.5 min. The tandem mass spectrometry was ... Given the high affinity of lanthanide ions for carboxylic acid groups, we used two amino acid-based functional monomers, N- ... Open this publication in new window or tab ,,Determination of testosterone in serum and saliva by liquid chromatography-tandem ... 4. Determination of testosterone in serum and saliva by liquid chromatography-tandem mass spectrometry: An accurate and ...