Sweat Chloride
Label Mnemonic: SWCL
Epic code: LAB907
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Chemistry
6240 RCP
356-3527
Specimen(s):
Sweat
Minimum:
20 mg of sweat
Testing Schedule:
0700-2000 Monday through Friday, excluding holidays. For additional services, contact Clinical Pathology Resident on-call at pager #3404.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
Sweat testing should not be performed within 48 hours of birth.

Less than or equal to 29 mmol/L = cystic fibrosis is unlikely
30 - 59 mmol/L = intermediate
Greater than or equal to 60 mmol/L = indicative of cystic fibrosis

NOTE:  Sweat chloride values less than 30 mmol/L have been documented 
in genetically proven CF patients.  Clinical correlation is 
necessary.
Comments:
This procedure is performed by specialized nursing staff of the 
Pediatric Specialty Clinic.

Notify laboratory of sample arrival by calling 356-3527.
Methodology:
Chloridometer
CPT Code:
82438