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
Ion selective electrode direct
Place specimen on ice and deliver to lab immediately.
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