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Sodium, 24 hour (or timed) urine

Item Value
Approval req'd? Yes, if testing is requested between midnight and 8:00 AM.
Available Stat? Yes
Test code NAUR
Test group Sodium
Performed by Parnassus Chemistry
In House Availability Test available 7 days per week from 8:00 AM to midnight only.
Method Ion Specific Electrode (ISE)
Collection Instructions Refrigerate the collection container during the period of the collection.
Container type 24 hour urine collection container

Click here for Urine Preservative Requirements
Amount to Collect Entire urine output for collection period
Sample type Timed urine collection
Preferred volume 1 mL urine
Min. Volume 0.2 mL urine
UCSF Rejection Criteria Container not refrigerated during collection.
Units mmol/D
Normal range Usually 40-220 mmol/D
Synonyms Urine electrolytes; Na
Stability Refrigerated 2 days
Turn around times STAT 1 hour, Routine same or next day.
Additional information Output varies with diet, but the concentration usually exceeds 20 mmol/L.
Last Updated 3/24/2013 7:53:36 PM
Entry Number 864
Lab Procedure Link Click here for Procedure
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