Biothesiometry

Biothesiometry is a noninvasive medical test used to quantify the perception of vibration by measuring its threshold.^[1] It is used in neurology and electrophysiology to diagnose a number of conditions, like diabetic neuropathy and erectile dysfunction, where the vibration perception threshold (VPT) would be higher than average.^[1][2] The numerical nature of the test can help stage the progression of disease or complications.

An analog biothesiometer kit

A digital biothesiometer

The test is done through a biothesiometer, which is composed of a handheld probe wired to a display unit. Both digital and analog types are commercially available, giving the reading on either a dial or a screen.

In a systematic review of screening methods for pediatric diabetic peripheral neuropathies, biothesiometry and fine microfilaments were shown to be the only diagnostic methods with high sensitivity and specificity.^[3]

A systematic review showed that there is a strong co-relation between HbA1c values and Vibration Perception Test and could be a predictor for complications in the foot following Diabetic Peripheral Neuropathy.^[4]

In a systemic review of modern devices available for the assessment and screening of peripheral neuropathy, digital devices were evaluated to measure tactile sensation, vibration perception, thermal perception and foot skin temperature.^[5]