Sweat Test
Also known as: Sweat electrolytes; Iontophoretic sweat test
Formal name: Sweat chloride
At a Glance
Why Get Tested?
To diagnose cystic fibrosis (CF)
When to Get Tested?
When a patient has symptoms that suggest CF; as a follow-up, confirmatory test to help diagnose CF
Sample Required?
A sweat sample collected using a special sweat stimulation procedure
Test Preparation Needed?
None needed; however, you may be instructed to avoid applying creams or lotions to your skin 24 hours before the test.
