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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 called iontophoresis, which allows acetylcholine, a naturally occurring chemical, to stimulate sweat glands. The QSART measures the volume of sweat produced by this stimulation.

On the Day of the Test

The technician will discuss the steps of the test and any questions you may have. You will be asked to remove your shoes and socks. The technician will wipe the skin on your leg and wrist with acetone, alcohol, then a tissue to wipe it dry. Four electrodes filled with acetylcholine are then placed on three areas of the leg and one on the wrist. The iontophoretic stimulators are turned on and sweat responses are measured. The test takes approximately 45 minutes. A mild burning discomfort may be experienced at the site of the stimulation during the test. Please wear loose clothing on the day of the test.

Eating and Drinking

You can eat a light breakfast. Do not eat or drink anything with caffeine, or smoke four hours prior to the test.


There are some medications that can interfere with the test. Please call 216.444.5596 with your medication list. Do not take any over the counter cold or cough medications, antihistamines, antidepressants, or diuretics 48 hours prior to the test.

After the Test

The Neuromuscular Staff evaluates the data collected by the technician and the final report is sent to the doctor who referred you for the tests (usually within one week). Your doctor will provide you with the results.


Neurology appointment office 216.636.5860 or toll free 866.588.2264.


Desk J2-2; second floor of the “J” building is reached by taking the “J South” elevator to the second floor and following the signs to Desk J2-2.


Please call the QPN/EMG Lab if you have further concerns or questions or wish to speak to a technician. 216.444.5596, or toll free 800.CCF.CARE ext.4-5596.

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