Children's Mercy Hospitals and Clinics
Name
Electrolytes

CMH Lab Section
Chemistry

Specimen Requirements
1.0 ml of blood in a heparin tube or red top w/ yellow ring gel tube

Availability
Stat: 1 hr Routine: 2-4 hrs

Special Instructions
Profile includes: Sodium, Potassium, Chloride and Carbon Dioxide (CO2)

Methodology
Vitros

Ranges
SODIUM
Age Dependent:
 0-3mos = 132-142 mmol/L
> 3mos = 135-145
Critical Values 
< 120 mmol/L (low) or > 150 mmol/L (high)

POTASSIUM
Age Dependent:
0-3mos = 3.5-6.2 mmol/L
>3mos = 3.5-5.2
Critical Values
0-3mos Hemolyzed & Non-hemolyzed = < 3.0 or > 7.0
> 3mos Non-Hemolyzed = < 3.0 or > 6.5
> 3mos Hemolyzed < 3.0 or > 7.0

CHLORIDE
99-112 mmol/L

CARBON DIOXIDE (CO2)
Age Dependent:
0-30 days = 18-29 mmol/L
>30 days = 20-30 mmol/L
Critical values
< 10 or > 40

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