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Laboratory Medicine

Test Catalogue

Aldosterone, 24Hrs Urine

Test Name

Aldosterone, 24Hrs Urine

Plain 24 bottle Specimen Type / Requirements

Container Type = 24 hour plain container bottle

Minimum Volume = 5 mL urine from mixed urine Collection

Specimen Handling

Collection Instructions: 24h urine collected in container without preservative and kept refrigerated or on ice during collection.. Ensure collection bottle is labelled correctly. Keep the collected urine refrigerated if possible and return to lab ASAP.

Write your "start" and "end" date and time of collection on the collection label or requisition.

Stability: Urine is stable refrigerated for 1 week. and frozen for 3 months (avoid freeze thaw cycles).

Sample Rejection Criteria: Urine collected with acid or leaking specimen

Transportation: Send sample to SMH core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

10 days

Test Utilization

Reference Value

Sodium excretion

Sodium excretion 0 – 200 mmol/d: Urine Aldosterone 8 – 75 (mmol/d)

Sodium excretion > 200 mmol/d: Urine Aldosterone < 28 (mmol/d)

Test Code




Testing Location


Other Information

Last Updated: August 26, 2020