Electrolytes, Urine

Casandra

Casandra Test Code AR23478Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0020498CPT Codes 82436, 84133, 84300

Also known as: ULYTE

Clinical Use

Order Test

Use

The Electrolytes, Urine test is used to measure the levels of electrolytes such as sodium, potassium, and chloride in urine. This test helps in assessing the body's electrolyte balance, kidney function, and can aid in diagnosing conditions related to kidney disorders, dehydration, and electrolyte imbalance. By measuring these electrolyte levels over a 24-hour period, this test can provide valuable insights into metabolic functions and fluid balance in the body, crucial for patients with conditions affecting fluid retention and excretion.

Special Instructions

For this test, it is important to collect a 24-hour urine sample, maintaining refrigeration throughout the collection period. The total volume and collection time must be recorded on the transport tube and test request form. Do not adjust the specimen pH. For accurate results, ensure the urine is well-mixed before transferring to the transport tube.

Limitations

This test measures urine electrolytes for a defined 24-hour period and volumes significantly differing from this may require additional interpretive consideration. Results could be impacted by patient hydration status, and large deviations in the collection period or volume may necessitate analyzing analyte to creatinine concentration ratios. Random urine specimens do not have established reference intervals, affecting result interpretation and reliability.

Test Details

FDA Approved