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Test Code NA U QNT Sodium, 24 Hour Urine

Clinical System Name

Urine Sodium Quantitation, 24 Hour

Sample Requirements

Specimen: Urine

Container(s): 24 Hour Urine Jug

Preferred Vol: Entire volume from 24 hr collection.

Minimum Vol: N/A


Note:g No preservatives are needed to start collection. Go to clinical lab with patient label to obtain urine jug.  Refrigerate sample during collection period.  Document start and stop dates/times, along with patient information.  Deliver labeled jug to Clinical Lab upon completion.


Processing Instructions

Reject due to:

Spin: N

Aliquot: N


Storage location: CPA Refrigerator, FrigB bucket, with patient labels. Timed collections other than 24 hr are acceptable.


Off-site collection: Send urine in original container refrigerated. 


Specimen Type Temperature Time
  Room temp  
  Refrigerated 7 d



STAT Performed TAT
N M - F 1 - 3 d


Performing Laboratory

Seattle Children's Laboratory    


Department:  Chemistry

Phone Number: (206) 987-2617

Reference Range

50 - 225 mEq/ 24 h


Results vary with dietary intake.


Method: Potentiometric - ISE by Vitros 4600

Analytical Volume: 10 mL


CPT Codes