ImpediVET is a single-channel, tetrapolar bioimpedance spectroscopy (BIS) device that measures fluid status and tissue composition for veterinary applications—from laboratory research to clinic. The device has been used on species as varied as echidnas, fish, cows, crocodiles, turtles, and seals. ImpediMed provides species-specific information for rats, mice, and horses as well as the flexibility to enter user-defined species information.
ImpediVET scans 256 frequencies between 3 kHz and 1000 kHz and uses Cole modeling with Hanai mixture theory to determine total body water, extracellular fluid and intracellular fluid. From there, fat-free mass and fat mass are calculated on the device. Validation studies confirm that BIS correlates highly with isotope dilution analysis, DXA and other reference methods. Data such as characteristic frequency, characteristic impedance and cell membrane capacitance are not available from any other bioimpedance technology.