Oxalate Analysis, Hemodialysate
Use
The Oxalate Analysis in Hemodialysate test is used for determining the amount of oxalate removed during a dialysis session. It aids in individualizing the dialysis prescription for hyperoxaluric patients, helping to monitor the adequacy of oxalate removal during hemodialysis. This can be particularly useful in the management of patients with hyperoxaluria and renal failure, especially following transplantation.
Special Instructions
Patient should avoid taking vitamin C supplements for 24 hours prior to dialysis. If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Limitations
Proper specimen processing and acidification are essential to obtain a quality result and avoid nonenzymatic generation of oxalate from ascorbate (vitamin C). Nonacidified frozen hemodialysate delivered to the laboratory within 3 days from collection will be accepted; however, in such cases, oxalate values may increase spontaneously.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 47715-8
- 47715-8
Result Turnaround Time
3-7 days
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
5 mL
Minimum Volume
2 mL
Container
Plastic, 10-mL urine tube or a clean, plastic aliquot container with no metal cap or glued insert
Collection Instructions
Adjust the pH of the specimen to 2.5 to 3.0 with 6M Hydrochloric Acid
Patient Preparation
Patient should avoid taking vitamin C supplements for 24 hours prior to dialysis
Causes for Rejection
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.
Stability Requirements
| Temperature | Period |
|---|---|
| Frozen | 14 days |