What is the difference between the Genetic and Serological tests for Blood Group AB?

The Blood Group AB genetic test for Ragdoll cats (K300) can determine whether your cat likely has Serotype AB (N/b) or not. If negative, it does not determine whether the cat has Serotype A (N/N) or B (b/b).

The serological test (K712) directly determines your cat’s serotype: A (N/N), B (b/b) or AB (N/b). This can only be tested on a blood sample.