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Test ID KS Potassium, Serum


Necessary Information


Patient's age and sex are required.



Specimen Required


Collection Container/Tube: 

Preferred: Serum gel 

Acceptable: Red top 

Submission Container/Tube: Plastic vial 

Specimen Volume: 0.5 mL 

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection. 

2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection. 


Reporting Name

Potassium, S

Specimen Type

Serum

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated 48 hours

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

LOINC Code Information

Test ID Test Order Name Order LOINC Value
KS Potassium, S 2823-3

 

Result ID Test Result Name Result LOINC Value
KS Potassium, S 2823-3

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-Kidney Transplant Test Request

-Renal Diagnostics Test Request (T830)

Useful For

Evaluation of electrolyte balance, cardiac arrhythmia, muscular weakness, hepatic encephalopathy, and renal failure

Day(s) Performed

Monday through Sunday

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.

CPT Code Information

84132

Specimen Minimum Volume

0.25 mL

Reference Values

<1 year: not established

≥1 year: 3.6-5.2 mmol/L

Method Name

Potentiometric, Indirect Ion-Selective Electrode