ABO vs Rh: what confuses candidates (and how to fix it)
Many candidates conflate ABO antibodies (usually naturally occurring) with Rh antibodies (immune, post-exposure). Keep these separate in your mind and the question logic clears.
Key takeaways
- ABO: IgM predominant, room temperature, complement activation, immediate reactions.
- Rh (D): IgG immune, often post-pregnancy/transfusion, haemolytic disease of the fetus/newborn relevance.
Use our course page to see how we drill this with MCQs.