Antinuclear antibody titers greater than 1:500 can be seen in autoimmune diseases, infectious diseases, tumor diseases and so on.
1. Autoimmune diseases. Antinuclear antibody is a general term for antinuclear antibody components, which is most common in autoimmune diseases, such as dry syndrome, systemic lupus erythematosus, rheumatoid arthritis and so on.
2. Infectious diseases. Viral hepatitis, tuberculosis infection, EBV infection, herpes virus infection, rubella virus infection and other conditions can cause increased antinuclear antibodies, but usually a low titer of 1:100~1:320 positive.
3. Neoplastic diseases. Neoplastic diseases such as lymphoma can also cause an increase in antinuclear antibodies, but they are usually low titer positive.
There are many diseases that cause positive antinuclear antibody, if the titer of antinuclear antibody is higher than 1:500, it is recommended to go to the hospital, complete the relevant examinations under the guidance of the doctor to clarify the cause, and follow the doctor’s instructions to standardize the treatment.