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Test ID: DOXA    
Oxalate Analysis in Hemodialysate

Method Description Describes how the test is performed and provides a method-specific reference

An enzymatic oxalate oxidase method for measuring oxalate in plasma and urine was adapted for dialysate fluid. The reaction yields hydrogen peroxide, which in the presence of peroxidase reacts with a dye to give a colored end point that is measured at 590 nm using a sensitive Beckman Coulter DU800 spectrophotometer.(Ladwig PM, Liedtke RR, Larson TS, Lieske JC: Sensitive spectrophotometric assay for plasma oxalate. Clin Chem 2005;51(12):2377-2380; Wilson DM, Liedtke RR: Modified enzyme-based colorimetric assay of urinary and plasma oxalate with improved sensitivity and no ascorbate interference: reference values and specimen handling procedures. Clin Chem 1991;37:1229-1235)

PDF Report Indicates whether the report includes an additional document with charts, images or other enriched information


Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.

Monday through Friday; 10 a.m.

Any exceptions needed for the above assay hours will need prior approval from the Renal Laboratory Director or in their absence the Renal Laboratory Supervisor.

Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.

3 days

Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result

7 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

14 days

Performing Laboratory Location The location of the laboratory that performs the test