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Ionized calcium
Lab code: ICA
Test Synonyms:
Calcium (ionized); iCa
Acute Care Lab
Inpatient Req:
Stat Core Lab (#70051)  
Outpatient Req:
Clinical Labs (#83608)  
OUTPATIENTS ONLY: Please note: Heparinized syringe is preferable if convenient, but ionized calcium also may be drawn in 5 ml Gold top tube. Gold top tube must be completely full and should not be shared with other tests.
Result Time:
10-15 minutes   Cost: $$
Reference Interval:
1.14-1.30 mmol/L
Critical value defined. See MGH Critical Values for details.