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Test Code CITACU Citric Acid, Urine  

Important Note

Per 24h calculations are provided to aid interpretation for collections with a duration of 24 hours and an average daily urine volume.  For specimens with notable deviations in collection time or volume, ratios of analytes to a corresponding urine creatinine concentration may assist in result interpretation.

Additional Codes

20852

Methodology

Quantitative Enzymatic
 

Specimen Type

Urine

Preferred Collection Container

24 hour urine container or sterile container for a random specimen

Collection Volume

4.0 mL aliquot of urine

Minimum Collection Volume

0.5 mL aliquot of urine

Collection Instructions

Adjust pH to less than or equal to 2 by adding 6M HCl unless boric acid preservative was added at start of collection.
 

Transport

Refrigerated

Rejection Criteria

pH not adjusted

Specimen Storage and Stability

Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 1 month
 

Turn Around Time

2-3 days

Lab Department

Referred Testing

Test Alias

20852; Citrate; Citric Acid, Random Urine; Citric Acid, Urine; Citric Acid/Creatinine Ratio, Random Urine; Urinary Citrate Excretion; CTEXU
 

CPT Coding

82507

EPIC Code

LAB377

Acceptable Collection Container

24 Hr. Urine Container, no preservative during collection is required.  Sterile urine cup for random specimens.  Boric acid preservative during collection is acceptable.
 

Testing Volume

0.5 mL

Day(s) and Time(s) Performed

Sunday through Saturday

LOINC

Creatinine, Urine-per volume 2161-8; Creatinine, Urine-per 24h 2162-6; Citric Acid, Urine-per 24h 6687-8; Citric Acid, Urine- per volume 2128-7; Citric Acid/Creatinine ration, Urine 13722-4; Total Volume 19153-6; Hours Collected 30211-7