1. What is the significance for testing secretor status?

- It can be utilized to subdivide A individuals into A3, Ax, Aend, and etc. Moreover, routine secretor studies also detect the presence of only H substance in A3, Ax, and Aend. Additionally, it is also significant in red cell reactions with anti-A and Anti-A, B. If it shows no agglutination, and secretors would demonstrate quantities of A substance in saliva then it is later identified as Am, if secretors contain small amount of A substance in saliva then it is identified as Ay, and if secretors contain only H substance and no A substance in saliva then it is identified as Ael