Pharmacokinetic (PK) describes how the body absorbs, distributes, metabolizes, and eliminates a drug, typically measured through concentration over time.
PK studies quantify exposure metrics such as Cmax, Tmax, AUC, half-life, and clearance to support dose selection and regimen design. In early-phase research, PK data help determine safe starting doses and escalation strategies. PK results also inform special population considerations, food effects, and drugñdrug interaction risk. Strong PK planning supports interpretable efficacy and safety findings across development phases.