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Test Code SWCL or LAB1726 Chloride, Sweat

Important Note

  • This test must be scheduled prior to collection.
  • To schedule this test, call Bronson Central Scheduling at 269-341-8700. 
  • This test is only collected at the Outpatient Testing Center in Kalamazoo.

Specimen Requirements

Collection Container:

Macroduct System - microbore tubing
Optimal Collection Volume:  As much as possible
Minimum Volume:

15 uL 
Collection Instructions:

Sweat Chloride Collection Standard Work
Specimen Transport:

Hand-delivered to the lab.
Processing Instructions: 

Sweat chloride specimens are delivered directly to chemistry.

Specimen Stability

Perform specimen analysis as soon as possible.

Specimen Rejection Criteria

Quantity not sufficient

Useful For

Confirming the diagnosis of cystic fibrosis (CF). 

Methodology

Wescor ChloroChek Chloridometer - Coulometric silver chloride titration

Reference Ranges

Interpretation

Reference Range and Reporting Units

CF Unlikely

0 to ≤ 29 mmol/L

Intermediate

30 to 59 mmol/L

Indicative of CF

≥ 60 mmol/L

Day(s) Performed

Monday through Friday, Day shift

Expected TAT

1-3 days

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo

Sample Retention Time

7 days

CPT Code

  • 89230 - Sweat collection
  • 82438 - Sweat analysis

LOINC Code

2077-6