. Author manuscript; available in PMC: 2025 Jun 1.

Published in final edited form as: Dig Dis Sci. 2024 Mar 18;69(6):2147–2153. doi: 10.1007/s10620-024-08304-0

Table 2.

Values of breathtest parameters according to genotype. Presented are median and (interquartile ranges). Wildtype= homozygous 13910C, Heterzygous= heterozygous 13910T and 13910C, Homozygous=13910T homozgous

Genotype	Peak H₂	Cumulative ¹³CO₂	Peak CH₄
Lactase non-persistant (13910C homozygous)	45 ppm (18- 68 ppm)	12,72% (7,62-18,47%)	0.20 ppm (0.04-1.13 ppm)
Lactase persistant (13910T / 13910C heterozygous)	1 ppm (0- 6 ppm)	13,90% (11,33-19,90%)	0.22 ppm (0.08-2.65 ppm)
Lactase persistant (13910T homozygous)	2 ppm (0- 5 ppm)	14.81% (11,24-20,72%)	0.26 ppm (0.08-2.66 ppm)