Ordering Recommendation

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation

24-hour or random urine. Refrigerate during collection.

Specimen Preparation

Do not adjust specimen pH. Transfer a 1 mL aliquot of urine from a well-mixed collection to an ARUP Standard Transport Tube. (Min: 0.5 mL) Record total volume and collection time interval on transport tube and test request form.

Storage/Transport Temperature


Unacceptable Conditions

Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 months


Quantitative Ion-Selective Electrode




Within 24 hours

Reference Interval

Test Number
Reference Interval
  Sodium, Urine mmol/day - ULYTE 51-286 mmol/day
  Potassium, Urine mmol/day - ULYTE 25-125 mmol/day
  Chloride, Urine mmol/day - ULYTE 140-250 mmol/day
  Creatinine, Urine - per 24h
Male (mg/d)
Female (mg/d)
3-8 years 140-700 140-700
9-12 years 300-1300 300-1300
13-17 years 500-2300 400-1600
18-50 years 1000-2500 700-1600
51-80 years 800-2100 500-1400
81 years and older 600-2000 400-1300

Interpretive Data

Per 24h calculations are provided to aid interpretation for collections with a duration of 24 hours and an average daily urine volume.  For specimens with notable deviations in collection time or volume, ratios of analytes to a corresponding urine creatinine concentration may assist in result interpretation.

Compliance Category



Reference intervals are not established for random urines.

Hotline History


CPT Codes

82436; 84133; 84300


Component Test Code* Component Chart Name LOINC
0020207 Creatinine, Urine - per volume 2161-8
0020208 Creatinine, Urine - per 24h 2162-6
0020535 Sodium, Urine mmol/L - ULYTE 2955-3
0020536 Sodium, Urine mmol/day - ULYTE 2956-1
0020537 Potassium, Urine mmol/L - ULYTE 2828-2
0020538 Potassium, Urine mmol/day - ULYTE 2829-0
0020539 Chloride, Urine mmol/L 2078-4
0020540 Chloride, Urine mmol/day - ULYTE 2079-2
0097110 Total Volume 19153-6
0097111 Hours Collected 30211-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.


  • Urine electrolytes
Electrolytes, Urine