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Laboratory Medicine

Test Directory / Sweat Chloride

Sweat Chloride

Collected by laboratory in macroduct system

TestSweat Chloride
Common AbbreviationsSWCHL
ProfileSweat Test
Tube typeCollected by laboratory in macroduct system
Clinical IndicationDiagnosis of Cystic Fibrosis
Specimen TypeSweat
Sample typeSweat
Minimum Volume20uL
Special Precautions
Stability72 hrs at room temp or in fridge
Turnaround TimeSame day or next day
LaboratoryCollection of samples in York and Scarborough; analysis in York
Reference IntervalPatient >6mths old: <40mmol/L = non CF 40-60mmol/L = equivocal >60mmol/L = CF Patient <6mths old: <30mmol/L = non CF 30-60mmol/L = equivocal >60mmol/L = CF
LimitationsPatient should be > 2 weeks old and not dehydrated
NotesSweat conductivity no longer available.
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