Within 24 hours
24-hour urine. Refrigerate during collection. Also acceptable: Random urine.
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.
Ambient: 8 hours; Refrigerated: 1 week; Frozen: Indefinitely
|Citric Acid, Urine - per 24h||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.|
Compliance Statement B: For laboratory developed tests not using a RUO kit, and for FDA approved, cleared or 510(k) exempt assays with alterations. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
|Component Test Code*||Component Chart Name||LOINC|
|0020207||Creatinine, Urine - per volume||2161-8|
|0020208||Creatinine, Urine - per 24h||2162-6|
|0020242||Citric Acid, Urine - per 24h||6687-8|
|0020243||Citric Acid, Urine - per volume||2128-7|
|0020744||Citric Acid/Creatinine Ratio, Urine||13722-4|
- Citric Acid, Random Urine
- Citric Acid, Urine
- Citric Acid/Creatinine Ratio, Random Urine
- Urinary Citrate Excretion