Do you mean APOE2 and APOE3? One copy of the APOE gene consists of two alleles one from your mom and one from your dad. There are any number of combinations. 2/3, 3/3, 3/4, 4/4, etc. 2 is preventive, 3 is neutral and 4 is an increased risk of Alzheimer's. You got tested with 23andMe and don't have APOE4 is that correct? Then your combination would be with the alleles 2 and 3 which are positive or neutral....2/3, 3/2, 3/3, etc.