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Test Code K U QNT Potassium Quantitation, Timed Urine Collection

Clinical System Name

Urine Potassium Quantitation, 24 Hours


Potassium Urine


Sample Requirements

Specimen: Urine

Container(s): 24 Hour Urine Jug

Preferred Vol:  24 hour collection

Minimum Vol: Timed collections other than 24 hr are acceptable.


Note: No preservatives are needed to start collection.  Go to clinical laboratory with patient label to obtain urine jug.  Refrigerate sample during collection.  Document start and stop dates/times, along with patient information on label.  Deliver labeled jug to clinical laboratory upon completion. Timed collections other than 24 hr are acceptable.

Processing Instructions

Reject due to:  Insufficient quantity, incorrect storage temperature

Spin: N

Aliquot: N

Temp: 2-8oC

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
Urine RT



 7 d

  -20oC or -70oC




STAT Performed TAT
N M - F  1 - 3 d


Performing Laboratory

Seattle Children's Laboratory    


Department:  Chemistry

Phone Number: 206-987-2617

Reference Range

25 - 125 mEq/24 hr


Results vary with dietary intake. 


Method: Potentiometric by Vitros 4600

Analytical Volume: 0.04 mL supernatant

CPT Codes