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Potassium Level*

Important Note

*This test is orderable in Cerner as Potassium Level

Methodology

Ion-Selective Electrode (ISE)

Performing Laboratory

Rutland Regional Medical Center Laboratory

Specimen Requirements

Specimen Type: Blood
Container/Tube:

Preferred: Light-green top (lithium heparin gel)

Specimen Fill Volume: Full tube

Specimen Minimum Volume: 2 mL

Collection Instructions:

1. Send specimen in original tube.

2. If there is a delay in transport of >1 hour, centrifuge tube.

Specimen Transport Temperature

Refrigerated

Normal Reference Values

3.5-5.1 mEq/L 

 

Day(s) Performed

Daily

Analytical Time:

1 day

Available Stat

Test Classification and CPT Coding

84132

Critical Values

<2.5 mEq/L or >6.0 mEq/L (automatic call-back)