Base excess on ABL 520 vs. Nova Phox. We are getting differences in base excess between these 2 instruments even though pH and blood gases are identical. Example today: Phox Base Excess 5.2 vs ABL 2.3 Phox Base Excess 13.1 vs. ABL 8.8 Has anyone any similar problem? Many thanks Sean Maguire Principal Biochemist, Mater Hospital, Dublin. [log in to unmask] ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/