Immunochemistry analyzes which of the following?

• A. Examines immune cells
• B. Detects genetic mutations
• C. Analyzes hormones, enzymes and drugs
• D. Measures blood glucose

Answer: (C)

Immunochemistry uses antibodies to detect and quantify specific substances in a sample. This approach is ideal for measuring molecules that circulate in blood, such as hormones, enzymes, and drugs. In practice, antibody pairs or labeled antibodies bind to the target molecule, and the binding is converted into a measurable signal, giving the concentration of that analyte. That’s why hormones (like cortisol or thyroid hormones), enzymes (such as cardiac enzyme markers), and drugs are commonly analyzed with immunoassays.

This method isn’t primarily about studying immune cells or mutations in DNA, and glucose is usually measured by enzymatic or electrochemical chemistry rather than antibody-based methods.