Usually, when you have a blood test, you can ask your doctor or whoever is taking the blood test to check whether it is positive or negative. Or you can ask your parents and take a guess from their blood group. Mine's O positive.
WELL WELL WELL I am the only AB - ive so far here, and I know it is the rarest group in the world,hahahahah atleast something in my body on which I can proud
Mine is A+ But still I don't know if this is good or not... or it isn't, or it is I think I can get blood from everybody, but can't give to everybody.. or can be different too... Greetz