Del/DelNeither copy carries the O-associated deletion — associated with blood type A, B, or AB, depending on other ABO gene variants not covered by this single marker.
Ins/DelOne copy of the O-associated deletion marker and one copy of the intact sequence — associated with blood type A or B, depending on other ABO gene variants not covered by this single marker.
Ins/InsThis variant is a deletion marker for the ABO gene's O allele. Two copies (Ins/Ins, meaning the functional-enzyme-disrupting insertion is present on both copies) is associated with blood type O.
This single marker narrows down but does not fully determine ABO blood type on its own — a clinical blood type test is the reliable way to know your type for medical purposes (e.g. transfusion, pregnancy).
Source: Yamamoto et al. 1990, Nature — molecular genetic basis of the histo-blood group ABO system.