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Drug addicts can now install by fingerprints - VIDEO PDF Print E-mail
Monday, 25 May 2015 18:00

The study, published in the edition Analyst, showed: discover the fact of using cocaine, you can use an ordinary fingerprint. The new method can detect the chemical signature of a drug metabolizing and excretes. In addition, it will be much more bystrodeystvennym than now applicable tests of saliva and blood, and this in turn will leave less chance of falsifying the results.

An international team of researchers, which included representatives from the University of Surrey, the Forensic Medicine Institute in the Netherlands, the UK National Physical Laboratory, King's College London and the University of Sheffield, has used various types of analytical chemistry technique known as mass spectrometry, for the analysis of fingerprints patients attending clinics for the treatment of drug dependence.

They tested how testing fingerprint efficiently than with the analysis of saliva samples. Previous methods of analyzing fingerprints could only show whether the person concerned drug hands, but were not able to indicate the direct use.

"When someone uses cocaine, the body displays metabolites - benzoylecgonine and metilekgonin, and these chemical indicators can be found on fingerprints, - says the study's lead author chemist Melanie Bailey (Melanie Bailey) at the University of Surrey. - In our study, we sprayed solvent slide Fingerprints, this method is known as desorption electrospray ionization (DESI), to determine whether the presence of the substances. DESI used for a number of forensic investigations, but not before it was found that this method can detect evidence of drug use. "

The researchers believe that the use of this test could have far-reaching consequences. Testing for drug use routinely used by law enforcement in prisons and courts, however, traditional methods still have some imperfections. For example, a blood test requires a trained staff and is associated with a certain biological hazards, and urinalysis can be rigged.

"The advantage of this method, in particular, that it may be non-invasive, and therefore more hygienic than testing blood and saliva samples and can not be faked - adds Dr. Bailey. - The identity of the subject has to be defined in detail fingerprint."

It is expected that in the future this technology will form the basis of portable diagnostic devices with miniature mass spectrometers. However, scientists have also developed methods for determining other types of drugs.


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