Preparation and Procedure of the Measurement
- Do not eat immediately before the measurement (do not consume any food 2-4 hours before the test).
- The last significant fluid intake should have occurred at least 1 hour before the measurement.
- Alcohol should be avoided for at least 24 hours before the measurement.
- Do not drink immediately before the measurement.
- Avoid engaging in heavily sweat-inducing activities 24 hours before the measurement.
- Empty your bladder before the measurement.
The examination is conducted while lying down. Prior to the measurement, you lie horizontally on a bed for approximately 10 minutes. The lying phase is essential because it allows the intracellular fluid to distribute more evenly (due to gravity), resulting in a more consistent electrical resistance and, therefore, a more accurate measurement.
Using two electrodes, one attached to each wrist and ankle, a non-perceptible alternating current is passed through the body. Due to the specific conductivity of water, muscles, and fat, conclusions can be drawn about the composition of the body.
The current intensities used are safe for the body and are not perceptible.