Laboratory Test Information Guide

Details for Citrate, Random Urine

Test Name: Citrate, Random Urine
Alternate Name(s):  
Laboratory: Core
Specimen Type: Random urine
(24-hour urine is the preferred sample type; see Lab Test Information Guide entry for Citrate, 24-Hour Urine)
Collection Information: Collect random urine in a sterile container and deliver to the core lab as soon as possible so that acid preservative can be added.

Minimum volume of urine required is 5 mL.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Referred out Tuesday-Thursday
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
14 days
Stat
 
 
Reference Range: ≥ 0.1036 mmol/mmol creatinine
Effective Date: 2017-12-11
Revised Date: 2018-03-02
Critical Value:  
Interpretive Comments: Urinary citrate is a major inhibitor of kidney stone formation due in part to binding of calcium in urine. Low urine citrate levels are considered a risk for kidney stone formation.
Special Processing: Add 4 drops of 6 N HCl to random urine collection. Final pH should be 1-3.
Comments:  
Method of Analysis: Enzymatic
Critical Information Required:  
Storage & Shipment: Store and ship frozen.
System Codes: 
Cerner
CITU
 
Referred To: In-Common Laboratories

Questions? Comments? Contact Laura Gopaul