Name: Calcium, Ionized
Test Name: Calcium, Ionized
Health Link Test Code: XICAL
LIS Test Code: ICA
CPT Code(s): 82330
Methodology: Ion Selective Electrode
Days Performed: Daily, 24 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: Red cap with yellow ring (SST)
Also Acceptable: Red top
Draw without tourniquet if possible. Tube MUST be allowed to fill completely. For faster turnaround, see 'Calcium, Ionized, Whole Blood'.
Collection Volume: Full 4 mL tube
Pediatric Collection Volume: Full 2 mL tube
Unopened, uncentrifuged- 2 hours; Unopened, centrifuged- 4 hours
Unopened, centrifuged- 4 days
Sample Analyzed: Serum
Testing Volume: 4 mL
Pediatric Testing Volume: 2 mL
Centrifuge to form a complete barrier.
Outreach Specimen Processing:
Transport specimen to UWHC Hospital Laboratory with coolant pack if coming from clinic location.
Transport specimen to laboratory immediately.
Green top tubes are not acceptable. Microtainer tubes are not acceptable.
|Age 1 month and up:|
|Actual ICA||4.60-5.20 mg/dL|
Calculated ICA corrected to pH 7.4
Interpretation Type: Reference Interval
Add-on requests for serum ionized calciums will not be accepted if sample has been previously opened and exposed to air. The alternative will be to add a whole blood ionized calcium (WBICA) to a blood gas previously drawn and sent to lab.
Critical Calls: yes