Discrete analysis is best described as what?

• A. Each sample-reagent mixture is handled separately in its own reaction vessel.
• B. Samples are analyzed in a flowing stream of reagent.
• C. Analyzer must be dedicated to measurement of only one analyte.
• D. It does not have random access capability.

Answer: (A)

Discrete analysis means treating each sample separately in its own reaction vessel with its own reagents, so every test is carried out in an isolated, individual setup rather than in a single continuous flow path. This approach keeps the reactions for different samples distinct and allows measurements to be made on one sample at a time. In contrast, flowing analysis analyzes samples as they travel through a flowing stream where reagents are mixed in a shared path and the signal is detected along the way. The idea that an analyzer must be dedicated to a single analyte isn’t a defining feature of discrete analysis, since a single instrument can be used to measure multiple analytes with different reagents and calibrations. Likewise, having no random access capability isn’t inherent to discreteness, as many discrete systems allow accessing samples in any order. So the description that best captures discrete analysis is that each sample–reagent mixture is handled separately in its own reaction vessel.