Sodium, Plasma or Serum
0020001
Ordering Recommendation
 
Mnemonic
NA
Methodology
Quantitative Ion-Selective Electrode
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Plasma separator tube or serum separator tube.  
Specimen Preparation
Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.2 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Body Fluid (refer to Sodium, Fluid, ARUP test code 0020154). Urine (refer to Sodium, Urine, ARUP test code 0020851). Specimens collected in potassium oxalate, sodium citrate, or sodium fluoride.  
Remarks
  
Stability
After separation from cells: Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 6 months  
Reference Interval
136-144 mmol/L  
Interpretive Data
 
Note
 
CPT Code(s)
84295
Components
Component Test Code*Component Chart NameLOINC
0020001Sodium, Serum or Plasma2951-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • K and NA blood concentration
  • K and Na blood level
  • K and Na Plasma or Serum
  • K+ and Na+
  • Na
  • Na+ and K+