Title: Reduction of oxalogenesis in a rapid gas chromatographic procedure for the analysis of oxalate ion in urine
Abstract: Oxalate was first coprecipitated at pH 5 as calcium oxalate precipitate (COP) with excess calcium ions and ethanol. Interference in the COP, mainly calcium phosphate, was successfully removed by washing with 0.1 M acetic acid equilibrated with calcium oxalate monohydrate crystal. Since the calcium content of the washed COP showed a high correlation with the original oxalate concentration, both in artificial (r=0.998, P<0.001) and real (r=0.951, P<0.001 for colorimetric; r=0.982, p<0.001 for enzymatic methods) urines, it could be used to predict indirectly the urinary oxalate concentration. The mean percentage recovery of the predicted oxalate was 98.95, S.D.=±4.77% (n=6). The method is simple, reproducible and relatively precise. It therefore could be set up as a routine method of urinary oxalate assessment in general clinical laboratories.
Publication Year: 1983
Publication Date: 1983-04-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 4
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