Test Overview
Test Methodology

Potentiometric (ISE)

Test Usage

Renal function, electrolyte balance studies

Reference Range *

43 - 217 mEq/24 hrs (43-217 mMol/24 hrs). Random urine collections are reported in units of mmol/L, for which reference values are not established.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily
Analytic Time

8 hours

Soft Order Code
SODU
MiChart Code
Sodium, Random Urine
Synonyms
  • Na, Urine
  • SODQ
  • Na, Urine
  • SODQ
  • SODIUM URINE RANDOM
  • SODIUM URINE 24 HOURS
  • SODU
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions

Collect 24 hour urine specimen with no preservative. Aliquot 5 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable.

Alternate Specimen
Specimens collected with glacial acetic acid or HCl preservative are acceptable. If collected in container with acid preservative, indicate on container and requisition: "Collected in Acid".
Rejection Criteria
Specimens collected with Boric Acid preservative are not acceptable. Diapers, sections of diapers, swabs or any other absorbent material will not be accepted as a collection container for urine.
Normal Volume
5 mL aliquot of 24 hour urine collection or 2 mL aliquot of random urine collection.
Minimum Volume
2 mL aliquot of 24 hour urine collection or 1 mL aliquot of random urine collection.
Billing
CPT Code
84300
Fee Code
20301
LOINC
SODU 2955-3 SODQ 2956-1
Resources