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Test ID KUR Potassium, 24 Hour, Urine

Useful For

Determining the cause for hyper- or hypokalemia

Method Name

Potentiometric, Indirect Ion-Selective Electrode

Reporting Name

Potassium, 24 HR, U

Specimen Type

Urine


Ordering Guidance


 



Necessary Information


24-Hour volume is required.



Specimen Required


Supplies: Aliquot Tube, 5 mL (T465)

Collection Container/Tube: 24-hour graduated urine container with no metal cap or glued insert

Submission Container/Tube: Plastic, 5 mL tube or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 5 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

Additional Information:

See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens in Special Instructions for multiple collections.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  7 days

Reference Values

≥18 years: 16-105 mmol/24 hours

 

Reference values have not been established for patients who are <18 years of age.

Day(s) Performed

Monday through Sunday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84133

LOINC Code Information

Test ID Test Order Name Order LOINC Value
KUR Potassium, 24 HR, U 2829-0

 

Result ID Test Result Name Result LOINC Value
KURU Potassium, 24 Hr, U 2829-0
TM28 Collection Duration 13362-9
VL26 Urine Volume 3167-4

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

NY State Approved

Yes

Urine Preservative Collection Options

Note: The addition of preservative or application of temperature controls must occur within 4 hours of completion of the collection.

Ambient

OK

Refrigerate

Preferred

Frozen

OK

50% Acetic Acid

OK

Boric Acid

OK

Diazolidinyl Urea

OK

6M Hydrochloric Acid

OK

6M Nitric Acid

No

Sodium Carbonate

OK

Thymol

OK

Toluene

No

Report Available

Same day/1 to 2 days