Which type of test forensic scientists to narrow down the possibilities of what drug a substance may be? confirmatory test positive test screening test

The right answer is screening test.

In medicine, screening consists of looking for one or more diseases or abnormalities known as "at risk" in individuals of a given population.

These investigations are followed or not by medical consultations, clinical examinations and treatments.

In addition, screening is a preliminary procedure (test or examination) to detect one or more characteristic signs or symptoms of a disease or syndrome and potentially leading to further investigation.

Screening Test

Explanation:

gradpoint

16

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the marks go by 4s