This volume provides stepwise instructions for the analysis of numerous clinically important analytes by mass spectrometry. Mass spectrometry offers clinical laboratory scientists a number of advantages including increased sensitivity and specificity, multiple component analysis, and no need for specialized reagents. The techniques described are a must for the measurement of many clinically relevant analytes in the fields of drug analysis, endocrinology, and inborn errors of metabolism. Each chapter provides a brief introduction about a specified analyte, followed by detailed instructions on the analytical protocol. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting edge and practical, Clinical Applications of Mass Spectrometry in Biomolecular Analysis: Methods and Protocols is a great resource for clinical laboratory scientists who are already using or thinking of bringing mass spectrometry to their laboratories.