Parent drug enough?Is systemic parent-drug exposure sufficient, or should active metabolites, released payloads, intracellular forms, or tissue distribution also be measured?
Which analyte set?Should the assay include metabolites, degradation products, conjugated species, payloads, linker-related products, or endogenous response markers?
Tumor exposure needed?Does the study require tumor homogenate, target-organ, cell lysate, or intracellular concentration data beyond plasma PK?
Metabolism or resistance?Do CYP-mediated metabolism, transporter effects, active metabolites, or resistance-associated changes influence interpretation?
Payload or linker stability?For ADCs and related formats, should released payload, linker stability, conjugated species, or degradation products be tracked?
Biomarker-linked response?Are pathway inhibition markers, apoptosis, proliferation, DNA damage, immune activation, or resistance biomarkers needed alongside exposure data?