Estimation of postmortem interval using an electric impedance spectroscopy technique: A preliminary study

The objective of this study was to develop a rapid method for the estimation of postmortem interval (PMI) using electric impedance spectroscopy. Postmortem rat spleens were studied at 10 °C, 20 °C, and 30 °C; The results obtained demonstrated that postmortem interval negatively correlated with the absolute value of Im Z// (capacitive reactance component) in electrical impedance. This suggests that electric impedance spectroscopy may be a sensitive tool to determine the postmortem interval.