Which technique is used for semiquantitative drug screening?

Which technique is used for semiquantitative drug screening?

• A. Gas Chromatography/Mass Spectrometry
• B. Thin Layer Chromatography (TLC)
• C. Mass Spectroscopy
• D. Capillary Electrophoresis (CE)

Answer: (D)

Semiquantitative screening aims to quickly indicate whether drugs are present and give an approximate sense of their levels rather than exact quantities. Capillary electrophoresis fits this goal well because it separates many drug compounds rapidly in a small capillary using an electric field, producing clear peak signals that can be compared to standards to estimate concentration. The method uses very little sample and can run multiple analytes in a short time, making it efficient for screening workloads. With appropriate detectors and calibration curves, you can obtain semi-quantitative data (rough concentration estimates) without the full, precise quantitation required for confirmation. That combination of speed, small sample needs, and the ability to generate approximate concentration information is why capillary electrophoresis is well suited for semiquantitative drug screening.

Semiquantitative screening aims to quickly indicate whether drugs are present and give an approximate sense of their levels rather than exact quantities. Capillary electrophoresis fits this goal well because it separates many drug compounds rapidly in a small capillary using an electric field, producing clear peak signals that can be compared to standards to estimate concentration. The method uses very little sample and can run multiple analytes in a short time, making it efficient for screening workloads. With appropriate detectors and calibration curves, you can obtain semi-quantitative data (rough concentration estimates) without the full, precise quantitation required for confirmation. That combination of speed, small sample needs, and the ability to generate approximate concentration information is why capillary electrophoresis is well suited for semiquantitative drug screening.