Antinuclear antibody 1:100 granular is an autoantibody, 1:100 is the titer of the antibody, and granular is one of its forms under immunofluorescence. Antinuclear antibody 1:100 granular means that the antinuclear antibody binds to the antigen and then adds FTTC-labeled immunoglobulin in the indirect immunofluorescence assay, which can be observed under the microscope as a weakly positive fluorescence distribution of granules, which is related to anti-U1 ribonucleoprotein, anti-Sm, anti-SSA, anti-SSB, etc., and is commonly found in a variety of autoimmune diseases, such as lupus erythematosus, dry syndrome, and other diseases. Diseases. When anti-nuclear antibody 1:100 particles, you should go to a regular hospital in time, and under the guidance of the doctor to complete the relevant examinations, to clarify the cause of the disease, and follow the doctor’s instructions for treatment.