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Quantitative Sensory Testing

Quantitative Sensory Testing (QST) refers to a set of tests to determine if you have an abnormal sensitivity to touch or temperature. They test for damage to the nerves that detect touch, vibration, heat and cold. Small nerve fiber activity is evaluated by thermal tests and large nerve fiber activity is tested by vibration. QST generally is not used to diagnose neuropathy alone, but rather is used to support the need for other, more objective tests, such as nerve conduction studies, neurologic examinations, nerve biopsy, skin biopsy, and autonomic function testing.