Susan has gone out with a group of her friends on a Friday night. They are having a good time and she decides to partake in the unknown substance that is going around. She does know that it is acting on either (. monoamine levels, 2. amino acid levels, 3. lipid substances. Shortly after taking the drug she begins to feel:

1. euphoric, active, and talkative.
2. mild euphoria, her anxiety has been reduced, and she is slightly uncoordinated.
3. mild analgesia and sedation, increased appetite, and a distortion in the passage of time.
4. (Can go on to describe the effects of many other drugs...PCP, heroin, LSD).

How would you go about figuring out what she has taken?'