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Potassium, Urine Random
MessageTest performed at York Hospital Laboratory.
Test Code
UPOT
CPT Codes
84133
Preferred Specimen
5 mL random urine, submitted in a plastic leakproof container
Minimum Volume
1 mL
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 6 months
Refrigerated: 7 days
Frozen: 6 months
Methodology
Potentiometric
Setup Schedule
Daily
Report Available
Next Day
Reference Range
None established
Clinical Significance
Normally, potassium is freely filtered by the glomerulus but tends to be conserved if the blood potassium is low. Urinary potassium may be elevated with dietary increase, hyperaldosteronism, renal tubular acidosis, and at the onset of alkalosis.