The Van Urk Reagent Was Used to Test a Sample

question 28

Multiple Choice

The Van Urk reagent was used to test a sample and it turned bluish-purple. This indicates the presence of:

• A) LSD.
• B) GHB.
• C) PCP.
• D) THC.
• E) MDMA.

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Definitions:

Opponens Pollicis

A muscle in the hand that allows the thumb to touch the tips of the other fingers, a key movement for grasping objects.

Opposition

A movement in which the thumb and fingers are brought together, allowing for the manipulation of objects.

Thumb

The first digit of the hand, notable for its opposability, enabling grasping and manipulating objects.

Opponens Pollicis

A small muscle in the hand that allows the thumb to touch the tips of the other fingers, facilitating grip and manipulation of objects.