Interpretation is based solely on sweat chloride concentration.
Age
Sweat Chloride concentration (mmol/L)
Interpretation
<6 months
<30
Cystic fibrosis is unlikely but requires genetic and clinical correlation
6 months and over
<40
30-60
Intermediate result which requires further cystic fibrosis assessment
40-60
All ages
>60
Supports a diagnosis of cystic fibrosis
Sweat sodium is used as a check of the chloride result. Interpretation is as follows:
Cystic fibrosis unlikely < 50 mmol/L
Supports the diagnosis of CF > 90 mmol/L
The Sodium and Chloride concentrations should be within 20 mmol/L of each other.
This is a screening test. Drugs detected in specimens will be stated on the report.
THIS ASSAY IS CURRENTLY NOT AVAILABLE
Negative
