Influence of Milk on Exhaled Carbon Monoxide (CO) Measurement by Portable CO Monitors
Table 2
CO levels measured by monitors A, B, and C and the reference analyzer and H2 levels measured by the reference analyzer before and after consuming milk.
Before consuming milk
Maximum levels after consuming milk
value
CO levels (ppm)
Monitor A
3.0 (2.0, 7.0)
4.0 (2.0, 8.0)
0.039
Monitor B
3.0 (1.0, 7.0)
5.0 (4.0, 9.0)
0.026
Monitor C
2.0 (1.0, 7.0)
2.0 (2.0, 8.0)
0.059
Reference
2.5 (1.2, 7.7)
2.6 (1.2, 9.8)
0.058
Reference H2 levels (ppm)
6.2 (3.8, 17.4)
28.4 (21.7, 36.6)
0.018
Values are expressed in median (first quartile and third quartile). .
