______________________ is a test that indicates whether or not a substance is present in the specimen being tested.

______________________ is a test that indicates whether or not a substance is present in the specimen being tested.

• A. Qualitative test
• B. Quantitative test
• C. Laboratory test
• D. Waived test

Answer: (A)

The key idea here is presence versus amount. A qualitative test is designed to tell you only whether a substance is present in the specimen, giving a positive or negative result without measuring how much is there. That’s why it’s the best choice when the test’s purpose is to indicate presence or absence. In contrast, a quantitative test measures how much of the substance is in the specimen, producing a numeric value or concentration. A laboratory test is a broad category that can include both qualitative and quantitative types, so it isn’t specific to presence alone. A waived test refers to the regulatory complexity of the test under CLIA, not to whether it detects presence or measures amount.

The key idea here is presence versus amount. A qualitative test is designed to tell you only whether a substance is present in the specimen, giving a positive or negative result without measuring how much is there. That’s why it’s the best choice when the test’s purpose is to indicate presence or absence.

In contrast, a quantitative test measures how much of the substance is in the specimen, producing a numeric value or concentration. A laboratory test is a broad category that can include both qualitative and quantitative types, so it isn’t specific to presence alone. A waived test refers to the regulatory complexity of the test under CLIA, not to whether it detects presence or measures amount.