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Chloride with Creatinine, 24 Hour Urine
Test Code368
CPT Codes
82436, 82570
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
10 mL 24-hour urine, no preservative in a plastic leak-proof container
Minimum Volume
2 mL
Other Acceptable Specimens
10 mL 24-hour urine preserved with boric acid or 24-hour
urine preserved with acetic acid
10 mL 24-hour urine
urine preserved with acetic acid
10 mL 24-hour urine
Instructions
Record total volume and collection time on specimen container and requisition
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Ion Selective Electrode (ISE)
Setup Schedule
Sets up 7 days a week.
Clinical Significance
Urine chloride excretion approximates the dietary intake. The chloride content of most foods parallels that of sodium. An increase in urine chloride may result from water deficient dehydration, diabetic acidosis, 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.
