Potassium, Urine
Also known as: U K
Use
The Potassium, Urine test is used to measure the amount of potassium excreted in urine, which can be valuable for evaluating electrolyte balance and kidney function, particularly in the context of conditions like nephrolithiasis (kidney stones). The test helps in assessing dietary intake, renal function, and the effectiveness of potassium-influencing medications.
Special Instructions
The collection process requires a 24-hour urine or random urine sample without additives, refrigerated during collection. Accurate total volume and collection time intervals must be recorded.
Limitations
Reference intervals for random urine specimens have not been established, limiting the interpretation of non-24-hour collections. Results can be influenced by dietary intake, medications, and collection errors. Specimens with notable deviations in collection time or volume might necessitate additional analysis against urine creatinine concentration for accurate interpretation.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 19153-6
- 2162-6
- 2829-0
- 30211-7
- 35674-1
- 35677-4
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
1 mL
Minimum Volume
0.2 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect 24-hour or random urine without additives. Refrigerate during collection.
Storage Instructions
Refrigerated.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 2 weeks |
| Refrigerated | 2 weeks |
| Frozen | 1 month |