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Test Code SWCL Chloride, Sweat

Specimen and Container/Tube

Sweat

Rejection Criteria

Sample volume less than 0.015mL will be rejected.
Patients less than 48 hours old will be rejected.

Turnaround Time

N/A

Test Includes

N/A

Specimen Type

Sweat

Preferred Volume

0.1 mL

UCMC Collection Instructions

  • Sweat collected according to CLSI C34-A3 guidelines by designated staff within the Department of Pediatrics Cystic Fibrosis Center using a macroduct coil collection device.
  • Specimens must be hand delivered to the Clinical Chemistry Laboratories in sealed containers to prevent  evaporation and contamination of the sample.
  • Patients must be at least 48 hours old to qualify for testing.
  • Multiple samples may NOT be pooled for analysis.

Test Usage

Used to aid in the diagnosis of cystic fibrosis.

Critical Results

N/A

Fee Code

43527

Container/Tube

Macroduct® Coil Collection Device

Specimen Minimum Volume

0.015 mL

Day(s) Performed

Monday – Friday
(7:00am – 12:00pm)

STAT DAY(S) AND TIME(S) PERFORMED

N/A

CPT

82438

Method Name

Direct Coulometric Titration (Amperostatic Coulometry)

Reference Values

Reference Ranges

Interpretation

Result

Report Always Comment

Cystic Fibrosis Unlikely:

≤29 mmol/L

Cystic fibrosis is unlikely.

Intermediate:

30 – 59 mmol/L

Intermediate

Indicative of Cystic Fibrosis:

≥60 mmol/L

Indicative of cystic fibrosis.

Results should be interpreted in relation to patient age and clinical condition by a physician knowledgeable about cystic fibrosis.

Results should be interpreted in relation to patient age and clinical condition by a physician knowledgeable about cystic fibrosis.

Reject Due To

Sample volume less than 0.015mL will be rejected.
Patients less than 48 hours old will be rejected.

STAT Turnaround Time

N/A

Synonyms

N/A

Test Limitations

Results should be interpreted in relation to patient age and clinical condition by a physician knowledgeable about cystic
fibrosis.

Offsite Collection Instructions

This test is currently not offered to Offsite Locations

Additional Information

N/A

Included in Additional codes

N/A

Coverage Information

N/A

Stability: Room Temp

N/A

Stability: Refrigerated

24 hours

Stability: Frozen

N/A

Pediatric Volume

0.015 mL

Clinical Indications

Used to aid in the diagnosis of cystic fibrosis.

Transport Instructions

This test is currently not offered to Offsite Locations

Test Components

N/A

Specimen Stability

N/A

Methodology

Direct Coulometric Titration (Amperostatic Coulometry)

Synonyms/Key Search Words

N/A