Laboratory Services

Sodium, Urine, 24 hr

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Updated Test Information:

Test Description
Sodium, Urine, 24 hr
Synonym(s)
Na
Test ID
UNA24
General Information
Urinary excretion of sodium varies significantly with dietary intake. Reference ranges given are typical of people on an average diet.
Specimen Type
Urine
Specimen Requirements
Urine, 24 hour collection
Specimen Collection / Processing Instructions
Urine, 24 hour collection - Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Screw the lid on securely. Container must be labeled with patient's full name, date and time collection started, and date and time collection finished.Store refrigerated during collection.
Additional Processing Details
The test request form must state date and time collection started, date and time collection finished, and 24-hour urine volume.
Stability
14 days at 15-25°C
14 days at 2-8°C
Stable at -20°C
Methodology
Ion Selective Electrode
Estimated TAT
0-2 days
Testing Schedule
Monday-Saturday
CPT Code(s)
84300
Reference Range
40-220 mmol/24hr
Performing Lab
Incyte Diagnostics
LOINC Code(s)
2956-1