IVISense Neutrophil Elastase 680 FAST^™ is a member of a family of activatable fluorescent imaging agents comprising a novel architecture, termed F.A.S.T. (Fluorescent Activatable Sensor Technology) that confers an improved pharmacokinetic profile with a broader range of early imaging time points. This architecture also offers higher target specific signal with reduced background.

This NIR agent is a neutrophil elastase activatable agent that is optically silent upon injection and produces fluorescent signal after cleavage by elastase produced by neutrophil cells. Neutrophil elastase is a key protease involved in acute lung injury, acute respiratory distress syndrome, as well as many other inflammatory processes such as emphysema, cystic fibrosis, COPD, wound healing, rheumatoid arthritis, ischemia-reperfusion and many others.

IVISense Neutrophil Elastase 680 FAST fluorescent imaging agent is a selective neutrophil elastase-activatable agent designed for imaging of this serine protease both in vitro and in vivo. The half-life in plasma of Neutrophil Elastase 680 FAST is 4 hours.