Release date: 2013-05-07
On May 2nd, although there has not been an instrument that can detect drugs like alcohol, Swedish scientists are convinced that they have made breakthroughs in the development of drug testing equipment. According to a report by Smithsonian, the Karolinska Institute in Stockholm recently planned to use a respiratory sampler called SensAbues (developed by the Karolinska Institute of Medicine) to easily detect drivers. Whether it is involved in poison.
When the human body breathes, a respiratory microparticle is formed as the bronchi closes. This particle produces a bioaerosol while exhaling the gas. Such bioaerosol particles can be collected by filtration techniques. Using liquid phase spectroscopy and mass spectrometry to detect drug abuse in the collected particles, it is possible to detect whether the particles contain drugs. This type of analysis has extremely high sensitivity and is often used in legal identification. It is in this way that SensAbues detects breath samples.
The scientists built a throat particle filter and invited 46 patients from the drug rehabilitation clinic to participate in the breathing test. During the use of SensAbues to test respiratory samples, the researchers discovered traces of multiple drugs. These include marijuana, cocaine, methamphetamine, morphine and diazepam. However, the results of testing within 24 hours of drug use are the most accurate.
At the same time, this test is also facing many questions. For example, would you drive a 24-hour car after smoking marijuana? What is the threshold for identifying the drug content in the respiratory tract? Can the presence of drugs in the respiratory system prove that they are also abundant in the human body? There is another fatal problem: 23% of the samples taken did not actually take the drug, but it was detected. It seems that these tests are sometimes not as reliable. Of course, the results of the equipment detection need to be sent to the laboratory for further analysis.
Source: Kexun
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