Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting
Dk green Sodium heparin (Na hep), no gel, unspun and unopened
Blood gas syringe
Refrigerated - 7 days
Ambient - 24 hours
Ion Selective Electrodes
0.5 - 1.5% (non-smoker)
> 20%