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Lab Test Dictionary

Aldosterone, 24-Hour Urine (19552X)


Hydrolysis; Extraction; Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)



Specimen Type

Urine, Timed Collection

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID

Other Reference Test

Lab Test Days

Sunday and Tuesday

Standard TAT

3-9 Days

Collection Information

Specimen Required

0.8-5 mL 24 Hour Urine

Container Type

24-Hour Urine Container

Collection Instructions

24 hour urine collected in a 24 hour container with 10 g boric acid or Random urine collected in a no preservative container (Reference ranges do not apply) is also acceptable.. Refrigerated during and after collection.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 7 Days; Refrigerated: 28 Days; Frozen: 21 Days

Rejection Criteria

Urine collected with HCl

Test Volume Required

5 mL 24 Hour Urine or Random Urine

Minimum Test Volume

0.8 mL 24 Hour Urine or Random Urine

Processing Instructions

Record 24 hour urine volume in comments, on specimen and on batch sheet.

Included Tests

Creatinine and Aldosterone.

CPT Codes