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22583 Electrolyte Panel

Electrolyte Panel
Test Code: LYTES
Synonyms/Keywords
Lytes, Serum or Plasma, Electrolytes, Panel, Electrolyte​, i-Stat Lytes
Test Components
Panel includes: Sodium, Potassium, Chloride, Bicarbonate and calculated anion gap.​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ ​ Plasma​/SerumLithium-heparin Plasma Separator (PST)​, Serum Separator Tube (SST)Lithium or Sodium-heparin Green Top (GTT), Red Top tube (RTT)1 mL​0.4 mL​0.5 mL whole blood​
​i-Stat only = Whole Blood​Lithium-heparin Green Top Tube (GTT)​​1 mL​200 uL ​
Collection Processing Instructions

Samples collected in a RTT or GTT must be removed from the cells within one hour for storage or transport. Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield. Do not send the primary collection tube. ​

i-Stat:  Sample must be tested within 10 minutes of collection.

Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 24 hours​
Refrigerate​ 7 days​
Frozen​ 3 months​
​i-Stat Whole Blood ​Ambient ​10 minutes
Rejection Criteria
Grossly hemolyzed specimens
​i-Stat testing:  clotted samples
​i-Stat testing:  anticoagulants other than lithium heparin
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Bloomer​ ​Monday through Friday ​Less than 2 hours​ ​Ion-Selective Electrode Potentiometry/i-Stat
​Cadott ​​Monday through Friday ​Less than 2 hours​

​​Ion-Selective Electrode Potentiometry/i-Stat

​Chetek ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Chippewa Falls ​​Monday through Friday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Colby/Abbotsford ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Cornell ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Cumberland ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Diagnostic Treatment Center ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Eagle River ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Hayward ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Ladysmith Medical Center ​​Monday through Sunday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Lake Hallie ​Monday through Friday

1 day (sent to Marshfield)

* stat order on i-Stat run locally = Less than 2 hours

 ​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
Amperometrical-Enzymatic/i-Stat​
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
Marshfield​ Monday through Sunday​ Less than 2 hours​ ISE/Beckman AU
​Mercer ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Merrill ​Monday through Saturday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
Mosinee​ ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Neillsville​Monday through Sunday​​​Less than 2 hours​​ISE/Siemens Dimension
​Oakwood ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Phillips ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Rhinelander ​Monday through Friday ​Less than 2 hours ​Ion-Selective Electrode Potentiometry/i-Stat
Stettin​ ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Stevens Point ​​Monday through Friday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Wausau ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Wisconsin Rapids ​​Monday through Friday ​Less than 2 hours​ ​ISE/Siemens Dimension
Wittenberg​ ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
Reference Range Information
Performing Location Reference Range
All Performing Sites See individual test listings for reference ranges.  ​
​​​ ​See Critical Value List for list of current critical values
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80051 ​ ​ ​ ​ ​
Synonyms/Keywords
Lytes, Serum or Plasma, Electrolytes, Panel, Electrolyte​, i-Stat Lytes
Test Components
Panel includes: Sodium, Potassium, Chloride, Bicarbonate and calculated anion gap.​
Ordering Applications
Ordering Application Description
​Centricity

​a. Electrolytes-Blood

b. Lytes

c. Electrolyte Panel

​Cerner ​Electrolyte Panel
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ ​ Plasma​/SerumLithium-heparin Plasma Separator (PST)​, Serum Separator Tube (SST)Lithium or Sodium-heparin Green Top (GTT), Red Top tube (RTT)1 mL​0.4 mL​0.5 mL whole blood​
​i-Stat only = Whole Blood​Lithium-heparin Green Top Tube (GTT)​​1 mL​200 uL ​
Collection Processing

Samples collected in a RTT or GTT must be removed from the cells within one hour for storage or transport. Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield. Do not send the primary collection tube. ​

i-Stat:  Sample must be tested within 10 minutes of collection.

Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 24 hours​
Refrigerate​ 7 days​
Frozen​ 3 months​
​i-Stat Whole Blood ​Ambient ​10 minutes
Rejection Criteria
Grossly hemolyzed specimens
​i-Stat testing:  clotted samples
​i-Stat testing:  anticoagulants other than lithium heparin
Test Components
Panel includes: Sodium, Potassium, Chloride, Bicarbonate and calculated anion gap.​
Reference Range Information
Performing Location Reference Range
All Performing Sites See individual test listings for reference ranges.  ​
​​​ ​See Critical Value List for list of current critical values
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Bloomer​ ​Monday through Friday ​Less than 2 hours​ ​Ion-Selective Electrode Potentiometry/i-Stat
​Cadott ​​Monday through Friday ​Less than 2 hours​

​​Ion-Selective Electrode Potentiometry/i-Stat

​Chetek ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Chippewa Falls ​​Monday through Friday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Colby/Abbotsford ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Cornell ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Cumberland ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Diagnostic Treatment Center ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Eagle River ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Hayward ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Ladysmith Medical Center ​​Monday through Sunday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Lake Hallie ​Monday through Friday

1 day (sent to Marshfield)

* stat order on i-Stat run locally = Less than 2 hours

 ​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
Amperometrical-Enzymatic/i-Stat​
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
Marshfield​ Monday through Sunday​ Less than 2 hours​ ISE/Beckman AU
​Mercer ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Merrill ​Monday through Saturday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
Mosinee​ ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Neillsville​Monday through Sunday​​​Less than 2 hours​​ISE/Siemens Dimension
​Oakwood ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Phillips ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Rhinelander ​Monday through Friday ​Less than 2 hours ​Ion-Selective Electrode Potentiometry/i-Stat
Stettin​ ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
​Stevens Point ​​Monday through Friday ​Less than 2 hours​ ​ISE/Siemens Dimension
​Wausau ​Monday through Sunday​ ​Less than 2 hours​ ​ISE/Siemens Dimension
​Wisconsin Rapids ​​Monday through Friday ​Less than 2 hours​ ​ISE/Siemens Dimension
Wittenberg​ ​​Monday through Friday ​Less than 2 hours​ ​​Ion-Selective Electrode Potentiometry/i-Stat
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80051 ​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.