ARUP's Laboratory Test Directory

Citric Acid, Urine : 0020852

Mnemonic: CITRIC U

Methodology: Quantitative Enzymatic
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: 24-hour urine. Refrigerate during collection. Also acceptable: Random urine.

Specimen Preparation: Adjust pH to less than or equal to 2 by adding 6M HCl. Transfer a 4 mL aliquot of urine to an ARUP Standard Transport Tube. (Min: 0.5 mL) Record total volume, collection time interval, and pH on transport tube and test request form. Also acceptable: Specimens previously preserved with boric acid.

Storage/Transport Temperature: Refrigerated.

Remarks:

Stability (collection to initiation of testing): Ambient: 8 hours; Refrigerated: 1 week; Frozen: Indefinitely
Reference Interval:
Test Number Components Reference Interval
Citric Acid, Urine 18 years and older: 320-1240 mg/d
Citric Acid/Creatinine Ratio, Urine 1 year and older: greater than or equal to 150 mg/g.

Interpretive Data:

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 82507
Cross References: Citrate (Citric Acid, Urine), Citric Acid (Citrate), Random Urine (Citric Acid, Urine), Citric Acid (Citrate)/Creatinine Ratio, Random Urine (Citric Acid, Urine)