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Test Code LAB54 Calcium, Ionized

Important Note

DO NOT OPEN TUBE UNTIL IMMEDIATELY PRIOR TO TESTING

Specimen Requirement

Serum; minimum 5.0 mL SST tube. Specimen must remain anaerobic.

 

Newborns on-site (Grand Forks): May be collected in a microtainer SST tube. Heelstick is acceptable. Transport immediately to the laboratory.

 

Referring lab: Allow specimen to clot for 30 minutes. Centrifuge for 10 minutes. Keep specimen anaerobic.

Specimen Stability

48 hours at 4° C 

2 hours at 20-25° C

Testing Schedule

Daily

Reference Range

4.6 – 5.5 mg/dL

Testing Department

Chemistry

Method

Ion specific electrode

CPT Code

82330

Outpatient Turnaround Time

Not Applicable

Inpatient STAT Turnaround Time

Within 30 minutes of collection

Inpatient Routine Turnaround Time

Within 30 minutes of collection