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Test Code URK Urine Potassium, Timed 

Important Note

If ordering a timed collection use order code URK

Specimen and Container/Tube

Specimen Type: Urine, Random Collection

Preferred Specimen: Sterile Plastic Container

Other Acceptable specimens: Sterile Clean Glass Container

Specimen Stability

Storage Temperature

Stability

Room temperature

14 Days

Refrigerated

14 Days

Frozen

N/A

Collection Instructions

  • Collect specimen per standard laboratory collection procedures. 
  • No preservatives or additives.

 

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

  • Collect specimen per standard collection procedure and send to laboratory immediately. 
  • No preservatives or additives.

 

UCMC Offsite and UC MedLab Outreach Instructions: 

  • Samples should be centrifuged within 2 hours of collection
  • No preservatives or additives
  • Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
  • Aliquot urine into plastic tube containing a minimum of 0.2 mL of specimen.
  • Urine samples must then be sent refrigerated at 2-8oC.

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits. 
  • Specimens that are collected with preservatives or additives.

Reference Values

Test

Age

Sex

Reference Range

Urine Potassium

All

All

N/A

Critical Values

Not applicable

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

STAT Turnaround Time: N/A

Routine Turnaround Time: 4 hours

Testing Schedule: 24/7

Clinical Indications

  • Quantitative determination of potassium in urine.

Test Components

Urine Potassium

CPT Codes

84133

LOINC Codes

2828-2

Methodology

Ion Specific Electrode (ISE) (Roche Diagnostics)

Synonyms/Keyword Search

N/A

Additional Information

  • Results should always be assessed in conjunction with patient's medical history, clinical examination and other findings.
  • Reference ranges for random urine specimens have not been established; subject to ordering physician interpretation only.

Last Review Date

4/7/2025

Volume

Preferred Volume: 0.5 mL

Minimum Volume: 0.2 mL