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Test Code 731 Sodium Urine, Random

Additional Codes


PowerChart: Sodium Random Urine

MA Cerner: Urine Sodium.

Specimen Requirement

5 mL urine is required.

Additional Specimen Collection Information

Collect a random urine specimen. Label the specimen appropriately with two identifiers, patient name and another identifier, (patient ID number, DOB, etc.) include date and time of collection. Store the urine specimen refrigerated and transport to the lab within 48 hours.

Useful For

Assessing acid-base balance, water balance, water intoxication, and dehydration


Testing is performed Monday through Sunday.

Typically completed within 2 hours after the specimen arrives at the testing site.

CPT Code Information

84300 Chemistry: Sodium; urine

LOINC Code Information

2955-3 Sodium [Moles/Volume] In Urine

Test Method

MercyOne: Ion Selective Electrode Poteniometry; Beckman DXC880i

MA: Ion-Selective Electrode (ISE) Method; Roche Cobas 6000

Reference Values

Reference values are not establish. Results are subject to interpretation by the clinician.