Table 2.

Means, SD, ranges, CV and QNS rates


CFQT		Macroduct/ChloroChek
Number of tests119130
Mean sweat chloride (mmol/L)70.062.7
SD39.534.9
Range (mmol/L)10 to >16010–118
QNS rate*6.8%6.0%
CV between extremities†9.5%4.8%

  • ↵* P = 0.8

  • ↵† P = 0.15