Figure 3From: Interpretation of non-invasive breath tests using 13C-labeled substrates - a preliminary report with 13C-methacetin Breath recovery curve of 13 CO 2 /12 CO 2 ratio from the 13 Cmethacetin breath test. 13C-metha cetin was applied intravenously in a dosage of 2 and 4 mg/kg and breath recovery was analyzed for in total 60 minutes.Back to article page