While the people have prescribed for Extractable Nuclear Antibodies (Quantitative) test, then they are suspected of tissue damage. This is a blood test that happens in a normal way. The blood sample that is referred for ENA test needs to check the level of ANA in the body. Sometimes the immune function of the human body is attacked by the dangerous bacteria, cancer or persistence. In such times, the ENA report is the most required element for diagnosis. The normal human body has an organic system to recognize the bacteria and cancer cells. If the organic system faces failure and the body shows a symptom of autoimmune diseases, then the ENA blood test is the only way to determine it.