_______________________ is clinical analysis and study of materials, fluids or tissues obtained from patients to assist in diagnosis and treatment of diseases.

• A. Qualitative test
• B. Laboratory test
• C. Profile
• D. Waived test

Answer: (B)

Laboratory testing is the process of analyzing materials, fluids, or tissues from patients to help diagnose and guide treatment of diseases. This broad activity encompasses any analysis performed on specimens to provide information about a patient’s health status, making it the best fit for the statement. A qualitative test merely tells whether a substance is present or not, which doesn’t fully describe the diagnostic workup. A profile refers to a specific set of related tests (like a lipid or liver function profile) rather than the general action of analyzing specimens. A waived test is a category under CLIA for simple, low-risk tests, not the overarching concept of analyzing patient samples for diagnosis and management.