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Potassium, Random Urine with Creatinine
Test Code8347
CPT Codes
82570, 84133
Preferred Specimen
10 mL random urine, no preservative in a plastic leak-proof container
Minimum Volume
2 mL
Other Acceptable Specimens
Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Ion Selective Electrode (ISE)
Setup Schedule
Set up: Daily; Report available: 2 days
Clinical Significance
Urinary excretion of potassium is increased in primary aldosteronism. It is often increased in dehydration and in salicylate toxicity. Decreased levels are seen in malabsorption.
