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Sodium
Test Code: VNA
Synonyms/Keywords
NA, Sodium
Species
Alpaca, Avian, Bovine, Camelid, Canine, Caprine, Equine, Feline, Ferret, Mouse, Other, Ovine, Porcine, Primate, Rabbit, Rat
Test Category
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
​Serum/Plasma ​Red Top Tube (RTT)

​Serum Separator Tube (SST)

Lithium-heparin Green Top Tube (GTT)

​0.5 mL ​80 uL
Collection Processing Instructions
Serum/Plasma must be separated from clot within 1 hour of collection.
Label tube with animal’s name.
Specimen Stability Information
Specimen Type Temperature Time
​Serum/Plasma ​Refrigerate ​1 week
​Serum/Plasma ​Frozen ​6 months
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Cleveland​ ​Monday through Saturday Less than 2 hours​ Ion Select Electrode/Olympus AU​
​Marshfield Monday through Saturday​ Less than 2 hours​ Ion Select Electrode/Olympus AU​
​Milwaukee Monday through Saturday​ Less than 2 hours​ Ion Select Electrode/Olympus AU​
​Minneapolis ​Monday through Saturday ​Less than 2 hours ​Ion Select Electrode/Olympus AU
Marshfield Center Laboratory Section
Test Information
Optimally, refrigerated serum should be analyzed within 3-5 days of collection for most chemistry assays.
Reference Intervals
Synonyms/Keywords
NA, Sodium
Species
Alpaca, Avian, Bovine, Camelid, Canine, Caprine, Equine, Feline, Ferret, Mouse, Other, Ovine, Porcine, Primate, Rabbit, Rat
Test Category
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
​Serum/Plasma ​Red Top Tube (RTT)

​Serum Separator Tube (SST)

Lithium-heparin Green Top Tube (GTT)

​0.5 mL ​80 uL
Collection Processing Instructions
Serum/Plasma must be separated from clot within 1 hour of collection.
Label tube with animal’s name.
Specimen Stability Information
Specimen Type Temperature Time
​Serum/Plasma ​Refrigerate ​1 week
​Serum/Plasma ​Frozen ​6 months
Test Information
Optimally, refrigerated serum should be analyzed within 3-5 days of collection for most chemistry assays.
Reference Intervals
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Cleveland​ ​Monday through Saturday Less than 2 hours​ Ion Select Electrode/Olympus AU​
​Marshfield Monday through Saturday​ Less than 2 hours​ Ion Select Electrode/Olympus AU​
​Milwaukee Monday through Saturday​ Less than 2 hours​ Ion Select Electrode/Olympus AU​
​Minneapolis ​Monday through Saturday ​Less than 2 hours ​Ion Select Electrode/Olympus AU
Laboratory Section
For most current information refer to the Marshfield Laboratory online reference manual.