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Chloride, 24-Hour Urine with Creatinine : 368
Test CodeURCLAU or 368
CPT Codes
82436; 82570
Instructions
Refrigerate during collection. Record total volume and collection duration on specimen container and test requisition.
Transport Container
Preferred Specimen
10 mL urine aliquot from 24-hour collection - no preservative
Alternative Specimens
Urine preserved with boric acid; Urine preserved with acetic acid; Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Miniumum Volume
2 mL
10 mL urine aliquot from 24-hour collection - no preservative
Alternative Specimens
Urine preserved with boric acid; Urine preserved with acetic acid; Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Miniumum Volume
2 mL
Transport Temperature
Room temperature.
Specimen Stability
Room temperature: 7 days; Refrigerated: 7 days; Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Urine preserved with HCl
Methodology
Ion Selective Electrode (ISE)
Setup Schedule
Sunday - Saturday
Report Available
1 day
Reference Range
See Laboratory Report
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.
Performing Laboratory
med fusion