Sodium, Random Urine

Additional Information:

UFHPL Epic order code: LAB444

CPT Code(s):

84300

Specimen Requirements:

Type: Urine, random

Container/Tube: Plastic urine container with no preservative

Sample Volume: 1 mL

Storage: Refrigerate specimens.

Specimen Retention Time: 5 days

Methodology:

The ISE module for Na+, K+, and Cl- employs crown ether membrane electrodes for sodium and potassium and a molecular oriented PVC membrane for chloride that are specific for each ion of interest in the sample. An electrical potential is developed according to the Nernst Equation for a specific ion. When compared to the Internal Reference Solution, this electrical potential is translated into voltage and then into the ion concentration of the sample.

Reported:

Within 24 hours

Reference Values:

No reference range established

Performed:

Monday - Friday