Oxalate - urine

Last updated: Monday, 22, March, 2004

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Item Process

24 hour urine collected with HCl as preservative.


Chromatography, spectrophotometry.

Reference Interval

Method dependent - consult pathologist.

ApplicationDiagnosis of primary or secondary hyperoxaluria in patients with renal calculi.

Elevation indicates hyperoxaluria, grossly increased levels occur in primary hyperoxaluria.

Very high levels are also seen in patients with ethylene glycol poisoning.


Baker PW et al. Crit Rev Clin Lab Sci 1996; 33: 39-82.