Test Overview
ISE
Ionized calcium is the physiologically active form of calcium and a better indicator than total calcium of the functional status of calcium metabolism.
1.12 - 1.30 mmol/L
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
2 hours
- Free Calcium
- Ionized Calcium
STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).
Specimen Requirements
Collect specimen in SST (preferred) or green top tube. Do not aliquot serum or remove stopper for any reason. Centrifuge and refrigerate intact specimen. Because this analyte is sendsitive to air exposure and pH changes, specimens sent for Ionized Calcium require a dedicated sample and cannot be shared for other tests ordered and add-on requests cannot be accepted for samples sent for other testing.