Test Code LAB446 Sodium - 24 Hour Urine
Department
CHEMISTRY
Collection Requirements
24 hour urine.
Do not add preservatives to the collection container.
Keep the container on ice or refrigerated during collection.
Primary Collection Container
24 HR Urine container
Transport
Urine refrigerated
Preferred Transport Temperature
Refrigerated
Processing
Keep specimen refrigerated until processing.
Measure total volume.
Aliquot, centrifuge and refrigerate.
Note total volume on the label.
Stability
Ambient: 8 hours
Refrigerated: 1 week
Minimum Testing Volume
0.5 mL
Reference Range
40 – 220 mmol/L
Methodology
Roche c503 Ion Selective Electrode
Performed
Sunday – Saturday
6:30 am – 3:00 pm
Reported
As completed
CPT Codes
84300