BA A test called a blood culture is done to see if there is an infection of the blood. There are different types of blood culture tests. One of these tests checks for a type of organism called aerobic bacteria. Bacteria are tiny organisms that live in the body and the environment. Aerobic bacteria are bacteria that can live and grow in the presence of oxygen.
Some bacteria cause illness.
Others pose no problems to humans or may be helpful. This test is done most often on very young or old people and people with weakened immune systems. However, this test may be done anytime a person has a serious infection. This is because most severe infections can spread to the blood. For example, kidney and lung infections are two of the most common causes of blood infections.