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Test Code LYTES Electrolyte Panel, LAB16

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Green-top (lithium heparin) tube-Hemolyzed specimen or

                    sodium heparin tube is not acceptable.

Acceptable: Gold-top serum gel tube or plain red-top tube

Specimen Volume: 0.2 mL of plasma or serum

Stability: Stable for at least one week stored at (2-8ºC) and for at least one year frozen.

Note: 1. Elevated platelets can cause a falsely elevated serum potassium level because

              of the release of potassium during clotting process. Specimens from patients with

              elevated platelet counts must be drawn in a heparinized plasma tube.

Reference Values

See individual test listings.

Day(s) Test Set Up

Monday through Sunday


Profile Information:
Carbon Dioxide (CO2) Potassium 
Chloride Sodium 

Test Classification and CPT Coding


Analytic Time

STAT within 1 hour of receipt

Routine within 2 hours of receipt