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Test Code CAION Calcium, Ionized, Blood

Methodology

Potentiometry

Performing Laboratory

St. Clair Hospital Laboratory

Specimen Requirements

Specimen should arrive within 4 hours of draw.

 

1 dark green-top (lithium heparin) tube (5 mL of lithium heparin whole blood). Do not centrifuge. Invert immediately after draw. Transport specimen at room temperature. Forward promptly.

It is acceptable for specimen to be placed on ice if it is requested along with Blood Gas testing.

Reference Values

0-1 day:  4.3-5.1 mg/dL
1-3 days:  4.0-4.7 mg/dL
>3 days:  4.5-5.3 mg/dL
Critical values (automatic call-back):  <3.3 mg/dL or >6.2 mg/dL

Day(s) Test Set Up

Monday through Sunday