Which assays can assess abuse potential?

• A. Behavioral
• B. Pharmacokinetic
• C. Biochemical
• D. Genetic

Answer: (A)

Abuse potential is most directly reflected by how a drug changes behavior in ways that show reinforcement and the likelihood of seeking the drug. Behavioral assays capture this by measuring actions like self-administration, where an organism actively obtains the drug, or conditioned place preference, where the drug’s rewarding effects are associated with a specific environment. These tests reveal the motivational properties of the drug—the core reason people might misuse it. Pharmacokinetic studies describe how the body processes the drug (absorption, distribution, metabolism, excretion) and reveal onset, duration, and peak levels, which can influence abuse risk but don’t measure how reinforcing the drug is. Biochemical assays examine molecular targets and mechanisms, while genetic studies look at inherited susceptibility; neither by itself determines how likely a drug is to be abused. Therefore, behavioral assays are the primary way to assess abuse potential.