Table 2

 Lactase activity and lactase:sucrase (L:S) ratio in Finnish children with T/T-13910, C/T-13910, and C/C-13910 genotype

GenotypeLactase activity (U/g protein)L:S
⩾10<10⩾0.2<0.2
T/T (n)77 (99%)1 (1%)77 (99%)1 (1%)
C/T (n)134 (98%)3 (2%)133 (97%)4 (3%)
C/C (n)
    0–5 years11 (92%)1 (8%)11 (92%)1 (8%)
    6–11 years6 (38%)10 (63%)2 (13%)14 (88%)
    >12 years0 (0%)9 (100%)0 (0%)9 (100%)