Your Toxicology Testing Facility Tests Urine Samples

question 3

Multiple Choice

Your toxicology testing facility tests urine samples.New screening tests for methamphetamine and amphetamine have been added to the drug profiles.Occasionally a positive methamphetamine immunoassay screening test is followed by a negative amphetamine confirmatory test result.What might cause this discrepancy?

• A) Recent use of hydrocodone would give a negative amphetamine result,as it blocks the reaction on the screening test.
• B) If the specimen contained ephedrine or pseudoephedrine,it might test positively for methamphetamine but not amphetamine.
• C) False-negative results are common,especially when the immunoassay is performed without prior glucuronide hydrolysis.
• D) Other chemically related compounds such as pseudoephedrine have been shown to produce positive results in amphetamine immunoassays.

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Definitions:

Community Information

Data or knowledge about a specific group of people that shares a common interest or location.

Theory Of Mind

Describes the ability to attribute mental states—beliefs, intents, desires, emotions, knowledge—to oneself and to others, and understand that others have beliefs and perspectives different from one's own.

False Belief

An erroneous understanding or conviction about something that does not align with factual reality.

Mental Processes

Cognitive activities and functions of the mind such as thinking, understanding, learning, and remembering.