Sign in →

Test Code NA Sodium, Plasma or Serum

Specimen Requirements

Submit only 1 of the following specimens: 

 

Plasma

Draw blood in a green-top (lithium heparin) tube(s) or a plasma gel tube(s). Spin down and send 1 mL of lithium heparin plasma refrigerated. Avoid hemolysis.

Note:  1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).

 

Serum

Draw blood in a plain, red-top tube(s) or a serum gel tube(s). Spin down and send 1 mL of serum refrigerated. Avoid hemolysis.

Note:  1. Indicate serum on request form.
2. Label specimen appropriately (serum).

Performing Laboratory

Conway Regional Clinical Laboratory Services

Reference Values

>15 years:  135-145 mmol/L

See report for younger age-dependent values.

Critical values (automatic call-back):  <120 mmol/L or >160 mmol/L

Methodology

Ion-Selective Electrode (ISE)

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

84295