Ammonium, Random, Urine
Use
Measuring urine ammonium aids in diagnosing causes of acidosis using random urine specimens and assists in the diagnosis and treatment of kidney stones by interpreting urinary acid–base handling.
Special Instructions
If not ordered electronically, complete and send the Renal Diagnostics Test Request (T830) with the specimen.
Limitations
Presence of sulfasalazine, sulfapyridine, or temozolomide may cause false results. Ammonium concentrations may be falsely low in specimens with pH above 8.0 due to contamination or urease‑positive organisms.
New York Approved
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
Result Turnaround Time
0-2 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
4 mL
Minimum Volume
1 mL
Container
Plastic tube; Sarstedt 5 mL Aliquot Tube (T914)
Collection Instructions
Collect a random urine specimen. No preservative.
Causes for Rejection
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Ambient: 72 hours |
| Refrigerated | Refrigerated (preferred): 14 days |
| Frozen | Frozen: 14 days |