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HelpTest Code ICA Calcium, Ionized
Additional Codes
| EPIC | LAB4041 |
Clinical Significance
Too low of ionized calcium (Ca2+) values can cause seizures or cardiac arrest. Too high of values can cause nausea, constipation, and kidney failure if calcium salts are precipitated in the kidneys.
Methodology
Indirect potentiometry (ABL 825 Flex)
Sample Type
| Preferred Sample Type | |
|---|---|
| Dark green top - Heparanized whole blood | |
Centrifuge: No
Specimen Minimum Volume
0.5 mL
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (18-25°C) | 1 hour |
| Refrigerated (2-8°C) | N/A |
| Frozen (-15 to -20°C) | N/A |
Sample must be run within 1 hour of collection.
Reference Ranges
| Normal Range |
|---|
| 1.11 - 1.33 mmol/L |
| Technical Range |
|---|
| 0.25 - 2.5 mmol/L |
| Critical Values |
|---|
| <0.90 or >1.58 mmol/L |
Rejection Criteria
| Hemolysis | N/A |
|---|---|
| Icterus | N/A |
| Lipemia | N/A |
Reject samples if:
- Collected on ice.
- Contain air bubbles.
- Contain clots.
- >1 hours old.
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
Lab Department
Chemistry
CPT Code
82330
LOINC
1994-3 Calcium.ionized (Bld) [Moles/Vol]