Cystic fibrosis is diagnosed with a sweat test, which reveals
A) a genetic defect in the skin structure.
B) a lack of sodium chloride in the sweat.
C) an elevated chlorine level.
D) deposits of potassium in the lungs.

Question

Quizplus · Accepted Answer

In children with cystic fibrosis, the body has difficulty moving chlorine across the cell membrane, and the built-up chlorine is excreted in sweat.

Cystic Fibrosis Is Diagnosed with a Sweat Test, Which Reveals