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QSART Quantitative Sudomotor Axon Reflex Test

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QSART Quantitative Sudomotor Axon Reflex Test

Purpose : Diagnostic neuropathy machine that tests for small fiber neuropathy, disturbance of ANS and complex pain disorders.

The QSART is a test that measures the autonomic nerves that control sweating. The test is useful in assessing autonomic nervous system disorders, peripheral neuropathies and some types of pain disorders. The test requires a mild electrical stimulation on the skin, which stimulates the sweat glands. The QSART measures the volume of sweat produced by this stimulation. The patient experiences little or no discomfort and and testing does not require any patient preparation, such as blood drawing or fasting.

This is a sensitive, reproducible, and quantitative method to test sudomotor function. The basis of the test is that the axon terminal of the sweat gland under the plate electrode is activated by bio-electrical stimulation; the impulse travels centripetally to a branch point and then distally to the axon terminal and a sweating response results.

QSART is used to diagnose:

  • Painful, small fiber neuropathy when nerve conduction test results are normal
  • Disturbances of the autonomic nervous system, which controls the sweat glands, heart, digestive system, other organs, and blood pressure
  • Complex pain disorders
  • Diabetic neuropathies
  • Enzyme disorders
  • RSD (Reflex Sympathetic Dystrophy, Complex Regional Pain Syndrome)
  • Dysautonomia
  • Dermatological studies
  • Multiple System Atrophy (Shy-Drager syndrome)

For specifications and information on QSART equipment for your medical office including a full financial analysis speak to a QSART specialist at  954-451-6395


Duration : 15-20 min
Target Specialties : Neurologist, Pain Medicine, Cardiology, Podiatry
CPT : 95923
Price [w or w/o financing] New: $34k-36k | Demo: $29k-32k | Rental Available

For specifications, pricing, rental or financing options, Call : 954-451-6395

Explanation of Benefit 1
Quantitative Sudomotor Axon Reflex Test
Aetna Clinical Policy
QSART billing sample
QSART Explanation
QSART Machine

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