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Aldosterone, 24-Hour Urine (19552X)
Test CodeUALDOB
Includes
Creatinine
CPT code 81050 may be added at an additional charge for volume measurement
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
1.5 mL 24-hour urine collected in a 24-hour container
Minimum Volume
0.8 mL
Other Acceptable Specimens
24-hour urine collected in a 24-hour urine container with 10g boric acid • Random urine collected in a no preservative container (Reference ranges do not apply)
Instructions
Record 24-hour urine volume on test requisition and urine vial. Refrigerate during and after collection.
Reference ranges do not apply to random urine samples.
Reference ranges do not apply to random urine samples.
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 28 days
Frozen: 21 days
Refrigerated: 28 days
Frozen: 21 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Urine collected with HCl
Methodology
Hydrolysis • Extraction • Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Night Sets up 2 days a week.
Clinical Significance
Aldosterone is a hormone produced by the adrenal glands. Patients with primary hyperaldosteronism exhibit hypokalemia, hypertension, and low direct renin concentrations.