p02 Venous Blood Gas on ABL90

I agree with James. I see this regularly when the patient is receiving oxygen.  Can you share an example of a high pO2 you're seeing? 

Good Morning 
Thank you, guys, for the advice recently we took over blood gases in the lab when we changed to epic.   @james our VBG are collected in a BD LiHep Green tube.  Thanks for the tip about receiving the O2.  I'm looking at 1 patient who PO2 was 228, but looking at the chart he was on supplemental O2 an hour before the collection, our nurses have a hard time documenting things in the new system.  So I'm not sure if he was still receiving treatment when the VBG was drawn. I'm giving them a little lead way because we just went live with epic. a few months ago.  

At our facility, we routinely draw venous gases in lithium heparin vacutainers.  When testing, we use a syringe and adapter to remove the sample from the tube as anaerobically as possible (we do not remove the cap).  I started a correlation study to validate lithium heparin line draw syringes to give us an option for lower volume draws as our policy states that the vacutainer needs to be full.  I am seeing a discrepancy in the pO2 between the vacutainer and syringe with the vacutainer always higher and anywhere from 20-100+ higher than the syringe for PO2.  We are using a GEM 5000, drawing a lithium heparin non-gel green top and syringe from the same patient from the same draw using a butterfly and waste tube.  Our GEM has been operating normally and the results from the green top and syringe are each repeatable.  I have also run the same tubes and syringes on the EPOC to validate and they match to the GEM.  The PO2 discrepancy seems to be with the lithium heparin no gel vacutainer.  We are currently investigating this further.