Test Code LAB54 Calcium, Ionized

Important Note

DO NOT OPEN TUBE UNTIL IMMEDIATELY PRIOR TO TESTING

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.

48 hours at 4° C

2 hours at 20-25° C

Daily

4.6 – 5.5 mg/dL

Chemistry

Ion specific electrode

82330