In addition, the discovery of the para-Bombay phenotype and other special blood types has created another blind spot for this method. In sum, using rhesus blood group to determine familial relationships can give erroneous results, and people have even been wrongly condemned on this account.
再加上後來陸續發現的「亞孟買型」等特殊血型所造成的盲點，以血型來判斷親子關係可能出錯，甚至有人因此含冤莫辯。