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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. 


Secondary ID

602352

Useful For

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

Specimen Type

Serum

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated 48 hours

Reject Due To

Gross hemolysis Reject
Gross lipemia OK

Reference Values

<1 year: not established

≥1 year: 3.6-5.2 mmol/L

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84132

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)