Rapid Screening of Illicit Drugs from Biofluid via Dried Blood/Urine Spot and Ultrasonic Desorption-Assisted Low-Temperature Arc Plasma Ionization Mass Spectrometry.
Analytical chemistry – April 29, 2025
Source: PubMed
Summary
A groundbreaking 3-second test now enables rapid detection of illicit drugs in blood and urine samples. Using innovative paper-based collection and advanced plasma technology, this method achieves highly accurate results with minimal sample preparation. The technique proves reliable across various storage conditions and can detect multiple drugs simultaneously, making it a game-changer for medical screening and forensic analysis.
Abstract
A novel method for rapid and sensitive illicit drug screening in biofluids has been developed by employing a paper-based sample collection coupled with ultrasonic desorption-assisted low-temperature plasma ionization mass spectrometry (PBS-LTPI-MS). For optimization, key experimental parameters, such as geometry coordinates, angle, and plasma intensity, were fine-tuned using ketamine as the representative analyte. The redissolution process, which encompasses the use of organic solvents and sample collection paper, underwent an evaluation to establish conditions conducive to efficient ionization. The proposed method demonstrated excellent analytical performance, with linear ranges exceeding R2 > 0.99, limits of detection ranging from 10 to 20 ng mL-1, and impressive recovery rates exceeding 91.16% in complex biofluid matrixes. Spiked recovery experiments revealed strong matrix tolerance and reliable performance, even in the presence of illicit drug mixtures. The robustness of the sampling device under varying storage temperatures and durations further confirmed the method's suitability for point-of-care testing and large-scale sample collection. With the ability to analyze samples within a mere 3 s, high-throughput potential, and environmental robustness, this method stands out as an invaluable instrument for rapid illicit drug screening and forensic analysis.