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Test Code UCL24H Chloride Urine 24 HR, LAB2074


Indirect Potentiometric

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: 24-hour urine collection

Specimen Volume: 0.5 mL from a 24-hour timed urine collection. No preservative.

                                 Refrigerate specimen during collection, and send specimen refrigerated.

Stability: Store at 2-8ºC or frozen for delayed analysis.

Collection Instructions: Obtain 24-hour urine jug from laboratory

Note: Starting and ending times of collection are required.

Reference Values

110-250 mmol/24 hours

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

81050-Timed urine measurement


Useful For

Chloride measurements are used in the diagnosis and treatment of electrolyte and metabolic disorders such as cystic fibrosis and diabetic acidosis.