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Lab Manual for Moffitt-Long and Mount Zion

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Citrate, 24 hour urine

Item Value
Approval req'd? No
Available Stat? No
Test code CITU
Test group Citrate
Performed by Quest
Sendout? Yes
Method Spectrophotometric, enzymatic
Collection Instructions Refrigerate container before and after collection.

Instruct patient to NOT include first morning specimen at the beginning of the collection, DISCARD, begin to collect all subsequent voiding until the same time the next morning, INCLUDE the first morning specimen at the end of the 24 hour. collection.

Submit specimen to Laboratory for processing
Container type 24 hour urine collection container

Click here for Urine Preservative Requirements
Amount to Collect Entire 24 hour urine output
Sample type 24 hour urine collection
Preferred volume 10 mL urine
Min. Volume 2 mL urine
UCSF Rejection Criteria Container not refrigerated during collection
Processing notes Record total volume collected on request. Mix collection well, aliquot 10 mL and refrigerate. Order Quest # 11315X.
Units mg/24 h
Normal range 100-1300 mg/d
Synonyms Citric acid
Turn around times Test run Tuesday-Saturday. Turnaround time: 2-5 days
LOINC code 6687-8
Last Updated 3/24/2013 7:47:40 PM
Entry Number 215

If you have additional questions regarding this test, please call: 415-353-1667

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