Advances in Clinical Chemistry, Volume 118, the latest edition in this globally recognized series, features chapters written by esteemed clinical laboratory scientists, physicians, and research scientists. The series delves into the cutting-edge technologies pertaining to the field of clinical chemistry, including topics such as Advances in Endotoxin Analysis, Molecular Biology of SARS-CoV-2 and Diagnostic Techniques, Osteopontin in Cancer, Gastrointestinal Hormones: Historical Background, Biological Aspects, and Measurement, Natriuretic Peptide Testing Strategies in Heart Failure: an Update for 2023, and Defining Acceptable Limits of Total Error in the Clinical Laboratory. This publication serves as the ultimate reference for innovative analytical approaches in the clinical laboratory.