ok, silly question. the Rhesus factor is what makes you positive or negative for a bloodtype, correct? just want that clarified for myself because i believe i am O-negative.
This tells you your phenotype/ It does not tell you what your genotype is unless you are O-. That is simply to say if you test B+ you could still be a carrier of B- or O- blood and even pass it on to your son or daughter. Can you get a genotype test?