Karnchanok Srigrid Varee Chiangmai School
The frequency of ABH secretor status was studied by detecting the ABH blood group substance using the standard tube-hemagglutination inhibition technique in the saliva of 30 students from Varee Chiangmai School, grades 10 to 12. The participants included 11 males and 19 females, accounting for 36.37% and 63.33% respectively. The secretor gene frequency among the students at Varee Chiangmai School was found to be 90%