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Important Information:

Specimen Collection:

Patient Collection Instructions:

Forms:

Mayo Clinic Laboratories

Test Code URK Potassium, Urine, 24 Hour

Additional Codes

EPIC:  LAB436

Methodology

Ion-Selective Electrode (ISE)
Used in the diagnosis and treatment of electrolyte and acid-base imbalance.

Performing Laboratory

St. Joseph Hospital

Specimen Requirements

Submit an entire 24-hour urine collection. No preservative. Refrigerate specimen during collection, and send specimen refrigerated.

Note:  1. Starting and ending times of collection are required on request form for processing.
2. Follow instructions in “Urine Collection” in “Special Instructions” for 24-hour specimens.

Reference Values

25-125 mmol/24 hours

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

81050 - timed urine measurement
84133 - potassium

Special Instructions