CHLORIDE,24 HOUR URINE

Code
500.1500
Name
CHLORIDE,24 HOUR URINE
Category
None
Department
Chemistry
Start Date
Expiration Date
Synonyms
24 Hr Urine CL
CPT Codes
82436
Site
Main Lab
Reference Test
ATLAS Test Code

Specimen Information

Type

Urine, 24-Hour

Volume

Transport Info

Room Temperature
7 day stability

Refrigerated
7 day stability

Frozen
stable

Fasting Required?
False
Patient Instructions

Reference Range

50-174 mmol/24 hrs

Methodology

Ion-selective Electrode (ISE)

Clinical Significance

Used in the diagnosis and treatment of electrolyte and metabolic disorders such as cystic fibrosis and diabetic acidosis.

Endogenous or exogenous corticosteroids produce urine chloride values greater than 20 mmol/L. Such patients are chloride resistant. The finding of chloride-resistant metabolic alkalosis may provide a stimulus to identify an ACTH or aldosterone producing neoplasm (e.g., Cushing syndrome or Conn syndrome). In Bartter syndrome with metabolic alkalosis, there is usually increased urine chloride. The complex relationships of chronic pulmonary disease with metabolic alkalosis have been investigated.

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