Dose Proportionality Assessment

Dose proportionality assessment determines whether plasma concentrations increase linearly with dose increments or exhibit non-linear kinetics from saturation phenomena. Linear kinetics produce proportional dose-concentration relationships supporting simple dose adjustments. Non-linear kinetics from enzyme saturation or absorption saturation necessitate careful dose titration. Michaelis-Menten kinetics characterise saturable metabolism guiding dose optimisation.

Population pharmacokinetic analysis incorporates dose-concentration relationships identifying saturation thresholds. Regulatory submissions incorporate dose proportionality data supporting dose selection. Clinical monitoring detects unexpected exposure accumulation indicating non-linear kinetics. Biomarker-driven dosing accounts for non-proportional kinetics optimising therapy. Emerging population pharmacokinetics enables individualised dose predictions.