Calcium, Ionized WB
Centralized Core Laboratory:Chemistry
Heparinized syringe, Green top (lithium heparin) microtainer
0.5 mL microtainer or syringe; (2) 250 uL capillary tubes
Cause for rejection:
Clotted, specimen not sent on ice, air bubbles
Daily, 24 hours; STAT
Direct measurement using ion-selective electrode
Place specimen on ice and deliver to lab immediately.
Test should only be drawn in outpatient locations within the Hospital on the Akron campus. If drawn off-site, send specimen by courier STAT to Hospital lab.
Reference range: Ca++ = 4.60-5.28 mg/dL; pH = 7.35-7.45