Sign in →

Test Code LAB1726 Sweat Chloride

Performing Laboratory

Asante Rogue Regional Medical Center

Specimen Minimum Volume

Prefer volume: 50 uL

Absolute minimum volume: 15 uL

Billing Code

2051423

Methodology

Coulometric Titration Chloridimetry

Specimen Requirements

Specimen collection is performed by the Cardiopulmonary Department by appointment only.  Contact Cardiopulmonary at 541-789-5049.


Specimen:  sweat (prefer volume:  50 µL)


Carried out in Cardiopulmonary Department by Special Studies Technicians.

Day(s) Test Set Up

Testing performed Monday through Friday, A.M. shift.  Results immediately reported to Cardiopulmonary Department.

Test Classification and CPT Coding

82438   Chloride; other source

Additional Information

Use:  Patients with cystic fibrosis (CF) have a normal
sweat rate and volume with an elevated concentration of sodium
chloride and potassium.  Sweat chloride provides the greatest
discrimination between CF and normal patients and is the most
frequently used test for CF diagnosis in the U.S.

Specimen Transport Temperature and Stability

Room temperature.  Transport to laboratory immediately for testing.

Collected Sweat sample is stable 72 hours if stored in a tightly capped microtube

Performing Department

RRMC Special Chemistry

Reasons for Rejection

QNS - Quantity not sufficient

Less than 15 uL