DOXA - Specimen: Oxalate Analysis in Hemodialysate

Test Catalog

Test Name

Test ID: DOXA    
Oxalate Analysis in Hemodialysate

Specimen Type Describes the specimen type validated for testing

Dialysate Fluid

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Patient Preparation: Patient should avoid taking vitamin C supplements for 24 hours prior to dialysis.

Supplies: Urine tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube (T068) or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 5 mL

Collection Instructions: Adjust the pH of the specimen to 2.5 to 3.0 with 6N HCl.

Additional Information: Nonacidified frozen hemodialysate delivered to the laboratory within 3 days from collection will be accepted and the following comment will be added to the result: In nonacidified hemodialysate stored frozen, oxalate values may increase spontaneously up to 30% (average 11% increase for dialysate oxalate stored for 48 hours, frozen, nonacidified).

Specimen Minimum Volume The amount of sample necessary to provide a clinically relevant result as determined by the Laboratory.

2 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected









Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
Dialysate FluidFrozen14 days