Lactose Malabsorption Testing in Daily Clinical Practice: A Critical Retrospective Analysis and Comparison of the Hydrogen/Methane Breath Test and Genetic Test (C/T₋₁₃₉₁₀ Polymorphism) Results

Table 2

Lactose H₂/CH₄ breath test versus genetic test (C/T₋₁₃₉₁₀ polymorphism) results.

	𝑛=263
	H2/CH4 breath test^+	H2/CH4 breath test^−
C/C−13910	19 (7.2%)	32 (12.2%)
C/T−13910	4 (1.5%)	132 (50.19%)
T/T−13910	1 (0.4%)	75 (28.51%)

+: >20 parts per million above baseline during the colon passage (60–120 minutes), −: negative.