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 you are Rh negative and youâre exposed to Rh-positive blood your body may make antibodies to Rh-positive blood on your next exposure to it. If a mother is Rh negative and a father is Rh positive, the child will likely be Rh-positive. This can create problems with pregnancy.