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Test Code Billings Clinic: 8367 Sweat Test

Performing Laboratory

Denver Children's Hospital

Methodology

Pilocarpine Iontophoresis for Collection

Chloride Analysis:  Titration

Sodium and Potassium Analysis:  Flame Photometry

Specimen Requirements

Contact Billings Clinic Laboratory at 866-232-2522 to schedule test if in-house patient.

  1. Collect 30 µL of sweat at 30 minutes after pilocarpine iontophoresis using the Wescor Macroduct® Collection System.
  2. Send off-site specimen at frozen temperature.
  3. Sweat collected from any method other than pilocarpine iontophoresis or Wescor Macroduct® Collection System will be rejected.

Reference Values

An interpretive report will be provided.

Day(s) Test Set Up

Monday through Friday

Test Classification and CPT Coding

82438 - chloride; sweat

84302 - sodium; sweat

89230 - sweat collection by iontophoresis