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Potassium, Random Urine without Creatinine
Test Code14521
CPT Codes
84133
Preferred Specimen
10 mL of an unpreserved aliquot random urine collected in a plastic leak-proof container
Minimum Volume
2 mL
Other Acceptable Specimens
Random urine, submitted in a UA Urinalysis Transport Tube (yellow-top, blue fill line preservative tube)
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 14 days
Refrigerated: 14 days
Frozen: 60 days
Refrigerated: 14 days
Frozen: 60 days
Methodology
Ion Selective Electrode (ISE)
Setup Schedule
Set up: Daily; Report available: 2-3 days
Reference Range
12-129 mmol/L
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.
