In children,a diagnosis of classic CF is partially determined by which of the following sweat test values (sweat chloride concentrations)?

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In children,chloride concentration levels are usually <40 mEq/L,with average values being 20 mEq/L in normals and 95 mEq/L for those with CF.A milder form of CF,or nonclassic CF,typically has chloride concentrations between 60 and 90 mEq/L.

In Children,a Diagnosis of Classic CF Is Partially Determined by Which