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Lab Manual for Moffitt-Long and Mount Zion

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Oxalic acid, random urine

Item Value
Available Stat? No
Test code OXALR
Test group Oxalate
Performed by Quest
Sendout? Yes
Method Spectrophotometry
Patient Preparation Patient should refrain from eating chocolate, nuts, rhubarb, spinach, tea and vitamin C for 48 hours prior to collection.
Container type Urine cup
Amount to Collect 10 mL urine
Sample type Random urine
Preferred volume 10 mL urine
Min. Volume 2 mL urine
Processing notes Adjust pH to 2.0 - 3.0 with 6 N HCl. Refrigerate aliquot at 4C. Order Quest test # 10456X
Units mg/g Creatinine
Normal range
Male 3-30 mg/g Creatinine
Female 3-40 mg/g Creatinine
Synonyms Oxalate
Stability Acidified random urine: Room temperature 6 days, refrigerated 1 week, frozen at -20C 4 months
Turn around times Run 5x per week. Turnaround 3-5 days
CPT coding 82570-90, 83945-90
LOINC code 13483-3
Last Updated 5/23/2013 12:25:12 PM
Entry Number 1189

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

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