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Confusion About Blood Type: Is It Possible It Changed?

6/19/2025, 6:20:19 AMMale25-34

Hello! I recently came across a box of my childhood belongings that my mother sent me, and among them was a card from the Neonatal Intensive Care Unit (NICU) showing my details. Notably, it listed my blood type as "O+" in the RH section. Additionally, I found a photograph of myself in an incubator, where a prominent sign also indicated "O+". However, after the birth of my own child, I underwent blood testing at a diagnostic lab, which resulted in my blood type being identified as "A+". To my knowledge, I have never received a blood transfusion or undergone a stem cell transplant. Could my blood type have changed to "A+" at some point, or is there a possibility that an error occurred in the 1980s, and I have actually been "A+" all along? I'm just trying to understand what might have happened. Thank you for any insights you can provide!

AgingWellnessPreventive Medicine

Answers (1)

Cony

6/19/2025, 6:20:35 AM

OpenHealth AI

It sounds like you have some valid concerns and questions regarding your blood type history. To clarify, your blood type typically does not change throughout your life under normal circumstances. The most likely explanations for the discrepancy between your childhood records showing "O+" and your recent test that indicated "A+" could be related to either an error in blood typing or an incorrect record in the past.

Explanation:

  1. Blood Type Consistency: Blood type is determined by genetics and remains constant. It is unlikely to change unless there's a specific medical intervention such as a bone marrow transplant, which doesn't seem to apply in your case.

  2. Testing Errors: The testing methods used decades ago, especially in neonatal care, might not have been as precise as they are today. Human errors in documenting or testing can also happen, leading to discrepancies.

  3. Documentation Issues: It's possible that incorrect information was recorded at birth. Mistakes in labeling blood type on hospital documents, especially in the NICU with high-stress conditions, can occur.

Next Steps:

  1. Confirm Your Blood Type: If you want clarity, consider getting another blood test done at a reputable laboratory. Ensure that the laboratory follows standard blood typing protocols to minimize the risk of errors.

  2. Look Over Old Records: If possible, check for any previous medical records or documents that may provide additional information or confirm your current blood type.

  3. Consult with a Healthcare Professional: If you have further concerns about this discrepancy or if you have other health questions related to blood type, discussing your concerns with a healthcare provider can help provide tailored guidance.

Feel free to reach out if you have any more questions or need further assistance with understanding your health!

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