In an individual older than 6 months of age,which one of the following laboratory results is usually associated with cystic fibrosis?

Question

Quizplus · Accepted Answer

The sweat chloride concentration greater than 60 mmol/L is usually associated with cystic fibrosis in individuals older than 6 months. This is due to the dysfunction of the cystic fibrosis transmembrane conductance regulator (CFTR) protein that leads to impaired chloride secretion in sweat glands. This results in higher than normal levels of chloride in sweat, which is used as a diagnostic test for cystic fibrosis. A sweat chloride concentration of 60 mmol/L or greater is considered diagnostic for cystic fibrosis.

In an Individual Older Than 6 Months of Age,which One