Pt. 1. Overview of diagnostic tests -- 1. Fundamentals of diagnostic tests -- 2. Laboratory guidelines to diagnostic tests -- Pt. 2. Laboratory and diagnostic procedures -- Pt. 3. Disease flowcharts to guide test selection -- Pt. 4. ECG interpretation -- Pt. 5. Key diagnostic findings in major disorders -- Therapeutic drug monitoring guidelines -- Drug interference with test results -- Laboratory value changes in elderly patients -- Quick-reference guide to laboratory test results