Lab-on-a-chip mass spectrometry tools for testing illicit drugs. This project aims to develop fit-for-purpose mass spectrometry tools for roadside and workplace testing of illicit drugs. The technology will be based on nanostructured semiconductor chips that are surface-functionalised to enable molecular capture without extensive sample processing and subsequent detection by a novel combination of techniques. The technology is expected to be applicable to saliva, sweat and urine samples.