pb1. Introduction to Mass Spectrometry for Bimolecular Analysis in a Clinical Laboratorybp p Y. Victoria Zhang and Uttam Gargp p p pb2. System Performance Monitoring in Clinical Liquid Chromatography-Tandem Mass Spectrometry LC-MSMSbp p Shannon Haymondp p p pb3. Tandem Mass Spectrometry for the Analysis of PlasmaSerum Acylcarnitines for the Diagnosis of Certain Organic Acidurias and Fatty Acid Oxidation Disordersbp p David Scott, C. Clinton Frazee III, Bryce Heese, and Uttam Gargp p p pb4. Quantification of Plasma S-Adenosylmethionine and S-Adenosylhomocysteine Using Liquid Chromatography Electrospray Tandem Mass Spectrometrybp p Erland Arning, Brandi Wasek, and Teodoro Bottiglierip p p pb5. Quantitation of Aldosterone in Serum or Plasma Using Liquid Chromatography-Tandem Mass Spectrometry LC-MSMSbp p J. Grace Van Der Gugten and Daniel T. Holmesp p p pb6. Comprehensive Determination of Amino Acids for Diagnosis of Inborn Errors of Metabolismbp p Stephen M. Roper, Annette L. Weindel, an