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Modifications to commercial oxalate oxidase based determination of urinary oxalate: A method suitable for routine clinical analysis

✍ Scribed by Angelo Mazzuchin; Lisa Michelutti; Hermann Falter


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
414 KB
Volume
23
Category
Article
ISSN
0009-9120

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✦ Synopsis


A commercially available assay (Sigma) for urinary oxalates based on the oxalate oxidase/peroxidase catalyzed reaction produced, in our hands, recoveries of added oxalate that varied from patient to patient. A modification of the assay is reported that involves the chromatographic separation of interfering substances, such as ascorbate and uric acid, from oxalate prior to analysis. With the modification recoveries of added oxalate were essentially complete and showed less patient-to-patient variability. Correlation with an alternate procedure was greatly improved.