Vanderbilt Pathology Laboratory Services
Test Directory
POTASSIUM 24 HR URINE (TKU)
Department: ChemistryTest Synonym(s): TKU
CPT Codes: 84133
Methodology: ISE
Reference Range: 25-100 mEq/24 hours
Tube Type: 24 hour urine container - plain
Specimen: 24 hour urine-total 24 hour collection
Alternate Specimen: 24 hour urine container; Acid collection is not recommended
Volume: 50 mL urine
Minimum Volume: 15 mL urine
Stability: <3 days at 2-8 degrees C; Freezing is not recommended
Days Performed: Daily
Times Performed: Continuous
Special Instructions: Refrigerate during collection - label with beginning and ending collection times and dates - indicate total volume if an aliquot is sent. Mix specimen well before aliquoting.
Click here to print the 24 Hour Urine Collection Guide.
Search Tests
Search Help
Search Options for the Test Directory:
1. Enter the test name in the Keyword search field.
Hint: You can also enter any part of the test name to expand the search.
(Example: you can type "west" or "sed" or "rate" to find Westergren Sedimentation Rate)
2. Enter the Vanderbilt Test Code, if known.
3. Choose one of the letter boxes to display a list of all test names and keywords starting with that letter.
If you are unable to find a test in our directory, please contact VPLS at
1-800-551-5227 or e-mail emily.k.thompson@vanderbilt.edu.
