According to the researchers, fingerprints carry chemical indicators that come out of the breakdown of cocaine. With an analysis of fingerprints, the scientists said they could discover much more quickly if a person has recently used cocaine.
This discovery potentially makes drug testing faster and easier, as there would no longer be any need to extract any kind of fluid from a patient. It will also make the drug testing procedure more secure, as fingerprints are unique and cannot be faked the way some people do with urine or blood specimens.
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