Hi,I am Dr. Shivaprasad C (Endocrinologist). I will be looking into your question and guiding you through the process. Please write your question below.
I'm not sure if my late father is my bio father his blood type was AB+ and my mothers is O+ I am also O+, I've heard that there are a few rare circumstances in which this can happen, could you tell me what they are and if there are any tests I can have that will confirm if my late father was my bio father or not. Oh my older sister is A+
AB blood grouping is not a test for paternity. If it possible that you are O+ if your mother is O+ and father was AB+. The real paternity tests involve DNA mapping and to be sure you must test DNA obtained with your father with that of yours. There will be common DNA sequences seen in the DNA pattern of your biological father and you.
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Are There Any Tests To Confirm Paternity?
Hi, Thanks for writing in. AB blood grouping is not a test for paternity. If it possible that you are O+ if your mother is O+ and father was AB+. The real paternity tests involve DNA mapping and to be sure you must test DNA obtained with your father with that of yours. There will be common DNA sequences seen in the DNA pattern of your biological father and you.