Calcium, Ionized, Blood*
Performing Laboratory
Rutland Regional Medical Center Laboratory
Specimen Requirements
Specimen Type: Whole blood
Container/Tube: Dark-green top (lithium heparin)
Specimen Volume: Full tube
Specimen Minimum Volume: 1 mL
Collection Instructions:
1. Immediately place specimen on wet ice.
2. Send specimen in original tube.
3. Tube must remain unopened until test is performed.
Specimen Transport Temperature
On wet ice
Normal Reference Values
1.13-1.32 mmol/L
Critical Values
<0.9 mmol/L or ≥ 1.6 mmol/L (automatic call-back)
Day(s) Performed
Daily
Available STAT
Analytical Time:
1 hour
Test Classification and CPT Coding
82330
Methodology
Ion-Selective Electrode (ISE)