Discussions By Condition: Blood conditions

What does it mean to have a Weak D Antigen?

Posted In: Blood conditions 0 Replies
  • Posted By: Joensy
  • August 19, 2012
  • 05:14 AM

I am very concerned. I live in a small town in Colorado where the nearby hospitals have doctors that will not listen to what their patients have to say. I am 10 week pregnant and have had my blood typed 3 different times recently.

10 years ago I donated blood at a college blood drive and was typed O+, which is what my dad's dog tags say that he as well, but when I was in the ER 4 weeks ago for spotting they typed me as O-. First off my grandma has O- blood, so not surprised and wouldn't have given it another thought but since I had been previously typed I was worried. They typed me 2 times in the ER that night and gave me the Rogam (spelling) shot.

The next week I contacted my OBGYN and he insisted that we do a third blood type test. which resulted in O-.

Last week I had my first OB appt and while the doc was looking back through my chart found that they had typed me during my first pregnancy as O+ in January of 08.

I called the hospitals lab and the pathologist called me back with this explanation.

He said that I have O positive blood someitmes and O negative blood others. (I have never heard of this). He said that sometimes when they type my blood that the secondary RH factor test they do was showing "D" antigens much stronger at sometimes and much weaker at others, accounting for sometimes my RH factor is positive and sometimes its negative.

I don't understand what is going on and I have had a few people tell me that I am a chimera blood type. Can anyone answer my questions? Does anyone have any idea about who I should contact? I'm pregnant and don't want anything to happen to my baby so any ideas or thoughts would be greatly appreciated.


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