Does lupus always show in ANA test?

No, lupus does not always show in ANA test. The antinuclear antibody (ANA) test is a blood test that looks for antibodies that are directed against the body's own cells. A positive ANA test result means that these antibodies are present, but it does not necessarily mean that a person has lupus. Other conditions can also cause a positive ANA test, such as other autoimmune diseases, infections, and medications.

Therefore, a positive ANA test result alone is not enough to diagnose lupus. Other tests and symptoms must also be considered in order to make a diagnosis of lupus.