UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu

Potassium, 24 hour (or timed) urine

Item Value
Approval req'd? Yes, if testing is requested between midnight and 8:00 AM.
Available Stat? No
Test code KUR
Test group Potassium
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 container during the period of the collection.

Note that the minimum acceptable time period for a 'timed' collection is 6 hours.

Results of collections of less than 24 hour duration will be adjusted to reflect a '24 hour collection'. The limited time of collection as well as the need to adjust the values to be comparable to the '24 hour' normal ranges will inherently affect the accuracy of the results.
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 25-125 mmol/D
Synonyms K; K+; Urine electrolytes
Stability Refrigerated 2 days
Turn around times 4-18 hours
Additional information Results of collections of less than 24 hour duration will be adjusted to reflect a '24 hour collection'. The limited time of collection as well as the need to adjust the values to be comparable to the '24 hour' normal ranges will inherently affect the accuracy of the results.
Last Updated 1/14/2015 10:08:45 AM
Entry Number 769
Lab Procedure Link Click here for Procedure
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center