Sweat Chloride
Label Mnemonic: SWCL
Epic Lab Code: LAB907
Downtime Form: A-1a Miscellaneous Request
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. For infants up to and including 6 months of age: 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 For individuals older than 6 months of age: Less than or equal to 39 mmol/L = cystic fibrosis is unlikely 40 - 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