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Test Code ICA Ionized Calcium, Whole Blood/Serum/Plasma

Specimen Volume

1.0 mL

Preferred Specimen

For Inpatients: Green No Gel (Whole Blood) 3.0 mL, dark green top

For Outpatients: Gold (SST) (Serum)

Alternate Specimen

Green Gel (GGT) is acceptable.

Specimen Handling Instructions

If other tests are ordered, collect a separate tube for the ionized calcium test. Important: Do not open the tube.

Green-top tube (GGT-Plasma) is also acceptable. Heparinized syringe also acceptable.

Transport

Routine courier pick-up

Cutoff Time

None

Department

Chemistry

Methodology

Ion selective electrode

Stat Turn-around Time

1 Hour

Routine Turn-around Time

1 Day

Reference Ranges

4.5-5.3 mg/dL