2 - 7 days
Aldosterone, 24Hour Urine
ALDUD - ALDU: Collection Duration
ALDUV - ALDU: Urine Volume
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Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Investigation of primary aldosteronism (e.g., adrenal adenoma/carcinoma and adrenal cortical hyperplasia) and secondary aldosteronism (renovascular disease, salt depletion, potassium loading, cardiac failure with ascites, pregnancy, Bartter's syndrome).
0-30 days: 0.7 - 11.0 mcg/24 hr; 31 days-11 months: 0.7 - 22.0 mcg/24 hr; >or=1 year: 2.0 - 20.0 mcg/24 hr.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect 24 hour urine specimen. Add 25 mL of 50% acetic acid (15 mL for pediatric patients <5 years) as a preservative prior to start of collection. Aliquot 10 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form.