Which field primarily utilizes ADME testing?

ADME testing is primarily associated with pharmacokinetics, which focuses on how a drug is absorbed, distributed, metabolized, and excreted in the body. Understanding these processes is crucial for determining the drug's efficacy and safety profile. Pharmacokinetics provides essential data on how a drug behaves in biological systems, influencing formulation development, dosing schedules, and potential side effects.

In contrast, while toxicology assesses the adverse effects of substances, its emphasis lies in the harmful impacts rather than the comprehensive understanding of a drug's pharmacokinetic profile. Clinical trials, while they involve pharmacokinetic data, are broader in scope as they assess the drug's overall efficacy and safety in a population. Pharmaceutical marketing focuses on the promotion and commercialization of drugs rather than the scientific assessment of their behavior within the body. Therefore, pharmacokinetics is the field most directly concerned with ADME testing, making it the most accurate answer.