ARUP's Laboratory Test Directory

0020851: Sodium, Urine

Test Mnemonic: U NA
Methodology: Ion-Selective Electrode

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: 24-hour urine (no additive). Specimen must be refrigerated during collection.  Also acceptable: random urine.

Transport: 1 mL aliquot from a well-mixed 24-hour or random collection at 2-8°C.  (Min: 0.5 mL)

Pediatric Collection/Transport: 0.2 mL aliquot from a well-mixed 24-hour or random collection at 2-8°C.

Remarks: Record total volume and collection time interval on transport tube and test request form. Do not use pH adjusted urine samples.

Stability: Ambient: 8 hours; Refrigerated: 1 week; Frozen: 3 months

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

CPT Code(s):
84300

 

 

 
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