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A sweat chloride test, also called a sweat test, is done to find out if a child has cystic fibrosis (CF).
Your child is having this test done because of symptoms that are sometimes seen in children who have cystic fibrosis.
Cystic fibrosis is a chronic condition of children and adults. About one out of every 3,000 people has CF. It most often affects the lungs and digestive system. Children with CF may have chronic lung infections or problems digesting their food.
It is important to know that many children have some of these symptoms but they do not have CF.
The sweat test is a simple test that takes about one hour. It is done by placing a solution on the forearm and stimulating the skin to sweat with a small electrical current. The sweat is then collected on a small piece of gauze.
Your child may feel a tingling in the arm but this test is not painful.
Sweat test results are available late in the afternoon on the day of the test. To get results, contact the ordering doctor / practitioner.
Your child should not be on iodide or bromide. It interferes with the sweat chloride test. This does not include the iodide in vitamins or salt.
For more information about CF, go to the Cystic Fibrosis Foundation website or contact the CF Center at Cincinnati Children's, 513-636-6771.
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