Breath Analysis

Exhaled breath condensate (EBC) is a non-invasive tool that provides airway-level biological context in early-phase respiratory drug development, helping to distinguish whether ambiguous trial results are due to drug failure or inadequate measurement. EBC is most valuable when the pharmacodynamic question is lung-compartment specific and cannot be answered by blood or FeNO, but its biomarkers are exploratory and require a pre-specified analysis plan for meaningful interpretation. While EBC does not provide validated endpoints, its inclusion can inform critical development decisions by adding mechanistic insight that systemic measures alone cannot offer.