ARUP's Laboratory Test Directory

Potassium, Urine : 0020849

Mnemonic: U K

Methodology: Quantitative Ion-Selective Electrode
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: 24-hour or random urine without additives. Refrigerate during collection.

Specimen Preparation: Transfer a 1 mL aliquot of urine from a well-mixed collection to an ARUP Standard Transport Tube. (Min: 0.2 mL) Record total volume and collection time interval on transport tube and test request form.

Storage/Transport Temperature: Refrigerated.

Stability (collection to initiation of testing): Ambient: 24 hours; Refrigerated: 2 weeks; Frozen: 3 months
Reference Interval:
 
Test Number Components Reference Interval
 Potassium, Urine 25-125 mmol/d
 Creatinine, Urine - per 24h  
 
Age Male Female
3-8 years 140-700 mg/d 140-700 mg/d
9-12 years 300-1300 mg/d 300-1300 mg/d
13-17 years 500-2300 mg/d 400-1600 mg/d
18-50 years 1000-2500 mg/d 700-1600 mg/d
51-80 years 800-2100 mg/d 500-1400 mg/d
81 years and older 600-2000 mg/d 400-1300 mg/d

Note: Reference interval for random urine has not been established.
CPT Code(s): 84133