A 10-year-old child has had two sweat tests, each indicating a sweat chloride concentration of 30 mEq/L. How should the therapist interpret these data?

Question

Quizplus · Accepted Answer

The gold standard for the diagnosis of CF is the sweat chloride test. Normal secretion and resorption of chloride in the sweat glands are dependent on adequate CFTR function. A sweat chloride concentration $\ge$60 mmol/L confirms the diagnosis. A concentration between 40 and 59 mmol/L in infants older than 6 months is considered intermediate and should be repeated along with CFTR mutation analysis. Normal individuals can occasionally have elevated sweat chloride concentrations not related to CFTR dysfunction.

A 10-Year-Old Child Has Had Two Sweat Tests, Each Indicating