Rh-positive

The doctor must test the woman’s blood to see if she is Rh positive, a marker that could complicate future pregnancies, even though medical guidelines say the test is not necessary before at least eight weeks.

If you have it, you’re Rh positive; if not, you’re Rh negative.

Looking at just the Rh factor, the team found that diabetes risk was the same whether or a not a woman was Rh positive or Rh negative.

If the mother has Rh negative blood but the baby is Rh positive she can develop antibodies to her baby´s blood during labour.

If clumping occurs, technicians can be sure that the specimen is Rh positive.