Fig. 1From: Measurement of fasting breath hydrogen concentration as a simple diagnostic method for pancreatic exocrine insufficiencyCorrelation of fasting breath hydrogen concentration (FBHC) with fasting breath carbon monoxide concentration (FBCC) and fasting breath methane concentration (FBMC). a Fasting breath hydrogen concentration (FBHC) and fasting breath carbon monoxide concentration (FBCC). There was a strong positive correlation between FBHC and FBCC (r = 0.754, P < 0.001). b Fasting breath hydrogen concentration (FBHC) and fasting breath methane concentration (FBMC). There was a negative correlation between FBHC and FBMC (r =  − 0.387, P = 0.001)Back to article page