Chloride, 24-Hour Urine with Creatinine

Test code

368

CPT code(s)*

82436, 82570

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Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide Service area information to confirm Test Code for the lab that services your account or to find available tests you can order.

In-home collection is not available in your area through Quest Mobile.

Clinical significance

Chloride, 24-Hour Urine with Creatinine - 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.

Test resources

None found for this test
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Details

Test details

Includes

CPT code 81050 may be added at an additional charge for volume measurement

Methodology

Ion Selective Electrode (ISE)

Specimen requirements
Patient preparation	None Specified
Preferred specimen(s)	10 mL aliquot of a 24-hour urine collected in a no preservative plastic urine container
Alternative specimen(s)	Urine preserved with boric acid • Urine preserved with acetic acid • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Collection instructions	Record total volume and collection duration on specimen container and test requisition.
Transport container	Plastic urine container
Transport temperature	Room temperature
Specimen stability	Room temperature: 7 days Refrigerated: 7 days Frozen: 28 days
Reject criteria	Urine preserved with HCl

Reference range(s)

See Laboratory Report

LOINC® codes

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Service Area Information

Performing lab & setup schedule

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Service Area Information

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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