Textbook of Laboratory Medicine Clinical Procedures Volume 2 extends the series from GGT to troponins by combining clinical depth with legal precision across more than 100 essential laboratory investigations, guiding clinicians, pathologists, and medico-legal professionals through standardized collection protocols, reference values, interpretation pitfalls, and real-world liability risks. It covers investigations ranging from gastrin, gentamicin levels, thyroid hormones, hepatitis panels, tumor markers, immunoglobulins, electrolytes, clotting profiles, vitamin and mineral deficiencies, drug monitoring, and cardiac troponins, while addressing common sources of error such as false GGT elevations, proton pump inhibitor interference, sample mishandling, ethnicity-based misinterpretation, failure to fast, drug interactions, specimen instability, and delayed follow-up. Each procedure includes focused medico-legal trap analysis showing how routine oversights escalate into professional and legal consequences. Written for clinical pathologists, laboratory medicine specialists, forensic and medico-legal consultants, postgraduate students, and institutional libraries, this volume teaches not only how to perform and interpret tests accurately, but how to ensure every result remains evidence-based, auditable, and defensible under regulatory and legal scrutiny.