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Specimen Collection Manual and Test Catalog

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CHLORIDE, 24 HOUR URINE

Geisinger Epic Procedure Code:  LAB1991    Geisinger Epic ID:  14330

SPECIMEN COLLECTION
Specimen type: 

24-hour urine


Preferred collection container: 
Specimen required: 

5 mL aliquot of urine; minimum 1 mL.


Special notes: 

Urine with preservatives is not acceptable. Mix well. Estimate total collection volume from 24-hour urine container. Remove required aliquot. Record total volume on both aliquot tube and request slip (if applicable).



SPECIMEN PROCESSING
Transport temperature: 

Refrigerated.


Specimen stability: 

Room temperature/Refrigerated: 7 days.


Rejection criteria: 

Urine containing preservatives is not acceptable. Stability limits exceeded.



TEST DETAILS
Reference interval: 

Urine chloride: 110-250 mmol/24 hours.


CPT code(s):  82436
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Chloride 24-hour urine; 24-hour total volume.


Methodology: 
Potentiometric
Synonyms: 

CL24


Clinical significance: 

Increased urine chloride may result from water-deficient dehydration, diabetic ketoacidosis, Addison's disease, and salt-losing renal disease. Decreased urine levels are seen in congestive heart failure, severe diaphoresis, and in hypochloremic metabolic alkalosis due to prolonged vomiting.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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