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NA
SODIUM, SERUM

Test Code NA 
Test SODIUM, SERUM 
Methodology Ion-Selective Electrode (ISE) 
Specimen Draw blood in either a plain, red-top tube or serum gel tube. Spin down and send 1.0 mL (minimum volume: 0.3 mL) of serum refrigerated. 
MMC Specimen Draw blood in a plasma gel tube. Spin down and send 0.5 mL (0.3 mL minimum) of plasma refrigerated. 
Reference Values 133 - 145 mEq/L

Critical values:
Outpatients:
<= 125 mEq/L >= 160 mEq/L
Inpatients:
Greater than 18 years
<= 120 mEq/L >=160 mEq/L
Less than or equal to 18 years
<=125 mEq/L >=160 mEq/L 

Analytic Time 1 Day - Available STAT 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 84295