Credit scores range from 300 to 850; scores of 620 or below are generally regarded as bad credit scores. However, it's important to note that what qualifies as a bad credit score is a little subjective and depends somewhat on the lender. A home mortgage is a good example of this credit score subjectivity. Federal mortgage companies Fannie Mae and Freddie Mac consider 620 and below to be bad credit scores.
A test for rubella is done to find out if: 1  A woman who is or wants to become pregnant is immune to rubella. 2  A recent infection was caused by the rubella virus. 3  A person has been vaccinated against rubella. 4  Health professionals who are in contact with pregnant women have had rubella. rubella test is usually done for a woman who is or wants to become pregnant to determine whether she is at risk for rubella. Several laboratory methods can be used to detect rubella antibodies in the blood.
Test Overview. A rubella blood test detects antibodies that are made by the immune system to help kill the rubella virus. These antibodies remain in the bloodstream for years. The presence of certain antibodies means a recent infection, a past infection, or that you have been vaccinated against the disease.