SODIUM, URINE

Mnemonic

24 Hr: NA24U<br>Random: NAU

Synonym

Na+ - Urine Sodium Cation - Urine Sodium Electrolyte

Specimen Collection Requirements

Collect

Preferred: 24-hour Urine, one sterile container, refrigerate during collection Also acceptable: Random Urine

Handling

Collect urine over 24 hours. Refrigerate during collection. Preservatives are not necessary and may interfere. Mix urine well before removing aliquot. Record collection time interval and total volume on transport tube and test request form.

Preferred Volume

0.5 mL

Minimum Volume

0.2 mL

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

Ambient (18-25°C): 24 hours; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 2 months

Testing Information

Performed

7 days/week

Method

Ion Selective Electrode

Referral Lab

Samaritan Health Services Laboratories

Reference Values

Reference Values

ADULTS
TIMED URINES: 40-220 mmol/24 hours
RANDOM URINES: Not established.

CPT Codes

84300

Last Updated: Thursday, January 5, 2017 03:42:30 AM