Children's Mercy Hospitals and Clinics
Name
Calcium, ionized - Whole Blood

CMH Lab Section
Chemistry

Specimen Requirements
0.3 mL blood in heparinized syringe or
at least half filled 3 mL green or mint green microtainer

No additional sample necessary if ordered with a blood gas

Place on ice if not sent immediately to critical care lab

Availability
Stat, Urgent, Routine

Turn Around Time
15 minutes

Methodology
Radiometer ABL

Ranges
All ages
1.13-1.37 mmol/L

Critical values
<85 mmol/L (low) or >1.55 mmol/L (high)

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