In analytical testing, what term refers to the component to be identified or quantified?

• A. The solvent.
• B. The reagent.
• C. The analyte.
• D. The calibrant.

Answer: (C)

The substance you aim to identify or measure is the analyte. In analytical methods, you look at a mixture to determine what that specific component is and how much of it is present. The solvent is simply the medium that carries or dissolves samples; it doesn’t represent the target you’re measuring. The reagent is something added to trigger a reaction or produce a detectable signal to help measure the analyte. The calibrant refers to a known standard used to build a calibration curve or set instrument response, not the unknown component itself. So the name for the component you’re identifying or quantifying is analyte.