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Oxalic acid, 24 hour urine
|Patient Preparation||Patient should refrain from eating chocolate, nuts, rhubarb, spinach, tea and vitamin C for 48 hours prior to collection.|
|Container type||24 hour urine collection container
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|Amount to Collect||Entire 24 hour urine output|
|Sample type||24 hour urine collection|
|Preferred volume||10 mL urine|
|Min. Volume||2 mL urine|
|Processing notes||Adjust pH to 2.0 - 3.0. Mix well before aliquoting. Refrigerate. For 24 hour urine order Quest # 5421N.|
|Normal range||3.6-38 mg/24 h|
|Turn around times||Test run Monday-Friday Turnaround time: 2-5 days.|
|Additional information||To convert mg/d to µmol/d (SI units) multiply by 11.4.
Urinary creatinine is assayed as a measure of the completeness of urine collection. If the total creatinine excretion is not within normal limits for the patient's age and sex (see entry for Creatinine) and the patient has normal renal function, the urine collection is probably incomplete and the result is invalid.
|Last Updated||5/23/2013 12:18:40 PM|