Aldosterone, Urine
Also known as: ALDO U
Use
The Aldosterone, Urine test is used to screen and diagnose hyperaldosteronism, a condition characterized by excessive production of the hormone aldosterone. This test helps in identifying disorders related to aldosterone overproduction, which can lead to high blood pressure and low potassium levels.
Special Instructions
Specimen must be collected over a 24-hour period and urine must be refrigerated during collection. It is important to record the total urine volume and collection time interval on the transport tube and test request form. Specimen handling and preservation are crucial to ensure the accuracy of the test results.
Limitations
Test results can be affected by factors such as incorrect specimen collection, preservation errors, or deviations in urine volume or collection time. Incorrect pH adjustments or insufficient specimen volume may also affect the results. Proper specimen handling and adherence to collection instructions are essential to minimize analytical errors.
FDA ApprovedNew York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 1765-7
Result Turnaround Time
2-5 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
4 mL
Minimum Volume
0.5 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect 24-hour urine. Add 1 g boric acid per 100 mL urine. For preserved samples, adjust the pH to 2-4. Use 6M HCl or 50% acetic acid. Freeze immediately if unpreserved.
Patient Preparation
Refrigerate urine during collection.
Storage Instructions
Store specimen frozen; refrigeration permissible if preserved with HCl or acetic acid.
Causes for Rejection
Improper pH, incorrect volume, improper storage conditions
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 hours |
| Refrigerated | 5 days (with preservative) |
| Frozen | 1 month |
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