Heparinized syringe, Green top (lithium heparin) microtainer
0.5 mL microtainer or syringe; (2) 125 uL capillary tubes; If collected in a microtainer, it must be a separate tube with no gel separator
Cause for rejection:
Clotted, air bubbles
Daily, 24 hours; STAT
Ion selective electrode direct
Deliver immediately to laboratory at room temperature.
For Outpatients, test should only be drawn in outpatient locations within the Hospital on the Beeghly campus. If collected at an offsite location, specimen is stable only 1 hour. Call a STAT Courier.
Reference range: 3.3-5.1 mEq/L