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Test Code UNAR or LAB444 Sodium, Random, Urine

Specimen Requirements

Container Type:

Sterile urine cup

 

 
Optimal Collection Volume: 

5 mL
Minimum Volume:

1 mL
Collection Instructions:

1. Collect a random urine specimen from the patient.

2. Ensure the lid is secured tightly before sending it to the lab.

3. Ensure that no preservatives are used.
Specimen Transport:

Refrigerate
Processing Instructions: 

1. Pour off urine into a labeled aliquot tube.

2. Centrifuge the urine aliquot.

3. Deliver the urine aliquot to the chemistry department.

Specimen Stability

Specimen Type Temperature Time
Urine Refrigerated 14 days
Room Temperature 14 days

Specimen Rejection Criteria

Quantity not sufficient

Useful For

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

Methodology

Roche Cobas - Potentiometric, indirect ion-selective electrode

Reference Ranges

Reference range not established.

Interpretive

RNAUR - Clinical & Interpretive: Sodium, Random, Urine (mayocliniclabs.com)

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo and Battle Creek

Sample Retention Time

7 days

CPT Code

84300

LOINC Code

2955-3