Tincture of cannabis. Tincture of cannabis, sometimes known as green dragon, is an alcoholic extract of cannabis. Cannabis tinctures are used in the production of specific extracts, like Nabiximols. Contents.
The Rh factor test is done during pregnancy to identify a woman's Rh factor. In some cases, the baby's father might need an Rh factor test, too. During pregnancy, problems can occur if you're Rh negative and the baby you're carrying is Rh positive. Usually, your blood does not mix with your baby's blood during pregnancy.
If a woman has a negative Rh factor and her partner has a positive Rh factor, she is considered to be at risk because it can cause the baby to become Rh positive. During pregnancy, the blood supplies of the fetus and the mother are separate, but there are instances it can be passed through to the child.