RT Book, Section A1 Saenger, Amy K. A1 Ranke, Michael B. A1 Miller, Bradley S. A2 Sarafoglou, Kyriakie A2 Hoffmann, Georg F. A2 Roth, Karl S. SR Print(0) ID 1140325863 T1 Endocrine Testing T2 Pediatric Endocrinology and Inborn Errors of Metabolism, 2e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071773140 LK accesspediatrics.mhmedical.com/content.aspx?aid=1140325863 RD 2024/04/19 AB Many of the most common tests used to diagnose endocrinological disorders are antibody-based immunoassays, although there is a shift toward developing liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays that provide excellent clinical specificity and often superior sensitivity (Table 51-1). Radioimmunoassays (RIAs) pioneered development of immunoassays and further refinement into mass spectrometry methods for quantifying peptide hormones but are not routinely used in clinical laboratories any longer.1,2,3,4