NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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confirming test
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selective test
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screening test
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None of the above
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Detailed explanation-1: -The most sophisticated drug-testing approach is gas chromatography coupled with mass spectrometry (GC/MS), which is regarded as a “gold standard"; it is used in confirmatory testing. Typically, GC/MS is preceded by a rapid immunoassay method to eliminate the majority of the “negative” samples.
Detailed explanation-2: -GC-MS is an essential technology in modern analytical chemistry labs. Applications include development of new pharmaceuticals and analysis of their purity, detection of chemical warfare agents and explosives, screening of athletes’ urine for banned performance-enhancing substances, and analyzing soil samples on Mars.
Detailed explanation-3: -Gas chromatography mass spectrometry (GC-MS) sample preparation is performed on smaller and more volatile samples including environmental pollutants, industrial byproducts, food contaminants, pesticides, and metabolites of illicit and designer drugs.