Sodium, Urine

Casandra

Casandra Test Code AR46374Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0020851CPT Code 84300

Also known as: U NA

Clinical Use

Order Test

Use

The Sodium, Urine test is used to evaluate the electrolyte balance in the body, which can be essential in diagnosing kidney disorders, dehydration, or conditions affecting sodium metabolism. It is often a component of studies investigating nephrolithiasis, hypertension, or disorders involving fluid balance. The test measures the concentration of sodium in urine over a given period, typically a 24-hour collection, providing valuable insights for clinical decision-making.

Special Instructions

For accurate results, collect a 24-hour urine specimen and refrigerate it during collection. Alternatively, a random urine sample is also acceptable for specific instances. It is important to record the total urine volume and the duration of collection, as these details are essential for interpreting the test results correctly.

Limitations

While the Sodium, Urine test is instrumental in assessing sodium excretion, variations in urine volume and collection time can impact the accuracy of results. Factors such as incomplete collection, changes in dietary sodium intake, or health conditions affecting water balance can influence outcomes. The test assumes a standard daily urine volume, and significant deviations may require adjustment in interpretation. Additionally, urine specimens with altered pH are not suitable for this analysis and should be avoided to ensure reliable outcomes.

Test Details

New York Approved