Days Set Up
Varies; test performed every other week, on Friday.
Analytic Time

8 hours

MiChart Code
Citrate, 24 HR Urine
Soft Order Code
UCITR

Test Updated:

Synonyms

Citric Acid
CITRATE URINE 24 HOUR
CITRATE

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All specimens should be accompanied by a requisition.

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MLabs provides all the supplies necessary for the collection of specimens.

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Test Overview

Test Methodology

Compound Enzyme Assay

Test Usage

Diagnosis of renal tubule acidosis and some forms of calcium-dependent kidney stones.

Reference Range

Normal adult: greater than 200 mg/24 hrs (> 1058 uMol/24 hrs)

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Collect 24 hour urine specimen. Add 25 mL of 50% glacial acetic acid (15 mL for pediatric patients) to container prior to start of collection. Following collection, mix very well to dissolve any citrate crystals that may have formed, measure 24 hour urine volume, aliquot 20 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Specimens with no preservative are also acceptable: send entire 24 hour collection to MLabs.

Normal Volume
20 mL aliquot of 24 hour urine collection
Minimum Volume
5 mL aliquot of 24 hour urine collection

Billing Information

CPT Code
82507
Pro Fee Code
 
Insurance Auth Info
 
LOINC
6687-8

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.