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Sweat Chloride Test

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Also known as: Sweat Electrolytes; Iontophoretic Sweat Test
Formal name: Sweat Chloride

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At a Glance

Why Get Tested?

When to Get Tested?

When an infant has a positive newborn screening test for CF; when you or your child has signs and symptoms that suggest CF or tested positive or indeterminate for CF with other tests

Sample Required?

A sweat sample collected using a special sweat stimulation procedure

Test Preparation Needed?

None; however, you may be instructed to avoid applying creams or lotions to your skin 24 hours before the test. Also, it is important to be well-hydrated before undergoing the procedure.