DRE DRE Toxicology & Drug Testing

Question 1

Which biological specimen is most commonly requested in a DRE investigation to confirm drug presence?

Accepted Answer

Blood

Answer

Blood is the preferred specimen in DRE cases because it most accurately reflects the drug concentration present at the time of impairment.

Question 2

What is the term for the process by which the body breaks down a drug into metabolites?

Accepted Answer

Metabolism

Answer

Metabolism refers to the biochemical transformation of a drug into metabolites, primarily occurring in the liver.

Question 3

A DRE suspect's blood draw should ideally be collected within how many hours of driving to capture peak drug levels?

Accepted Answer

4 hours

Answer

Blood should be collected within approximately 4 hours of driving to best capture relevant drug concentrations for most substances.

Question 4

Which drug category is most likely to produce a mydriasis (pupil dilation) finding on a toxicology-correlated DRE exam?

Accepted Answer

CNS stimulants

Answer

CNS stimulants such as cocaine and methamphetamine cause sympathetic activation, resulting in dilated (mydriatic) pupils.

Question 5

In DRE toxicology, what does a 'confirmatory test' such as GC-MS verify?

Accepted Answer

The identity and quantity of a specific drug

Answer

GC-MS (gas chromatography–mass spectrometry) is used to confirm the specific identity and concentration of a drug detected in a specimen.

(DRE) Drug Recognition Expert Certification Practice Test