NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is a correct statement about the chemical tests listed below?
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Scott and Duquenois-Levine tests are presumptive, Marquis is confirmatory
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Marquis test is presumptive, Scott and Duquenois-Levine are confirmatory
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Scott and Marquis tests are presumptive, Duquenois-Levine is confirmatory
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Marquis and Duquenois-Levine tests are presumptive, Scott is confirmatory
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Explanation:
Detailed explanation-1: -The Marquis test is the most frequently used spot color assay for the screening of unknown drugs such as amphetamine, methamphetamine, 3, 4-methylenedioxyamphetamine, 3, 4-metilenedioxymethamphetamine, and morphine.
Detailed explanation-2: -It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested. The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 5 mL of 40% formaldehyde.
There is 1 question to complete.