Blood Type: Screening Test for Paternity

Patient : Hi my question is can a mother who has blood type O and a father who has blood type A have a child with blood type AB as i read recently that this is not possible and am very confused. please help me as i need to start researching about myself if this is true. My father died a couple of months ago and i have no contact with my mother. i thank you annette lanzon
Doctor :   The possible blood types of children with one parent having blood type O and another having blood type A are blood type A and blood type O. Bearing a child with an AB blood type is very unlikely. As much as I don’t want to be the bad news bearer, there is a possibility that he was not your father. However, blood types are only preliminary investigations for paternity. There are DNA tests which will confirm paternity, a mere hair strand can be sampled for those tests but it can be pricey. I do wish you all the best. Take care always.

Related Q&A

Q: The end of the shaft of my penis is wrinkled when flaccid and when I get an erection it takes several minutes to expa...

Q: Hi I recently had quite vigorous sex with my partner. I noticed afterwards a small tear under my foreskin on the shaf...

Q: I had a small amount of blood in some discharge yesterday evening and I had intercourse with my boyfriend this evenin...

Q: Hey, so me and my girlfriend were about to have sex and and 45 minutes before I had a erections like 6 in row within ...

Q: I am 34 weeks pregnant and have grade 4 placenta previa, I have already had one heavy bleed and a hospital stay, I am...


Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon