Systemic lupus erythematous sle.
Ssa antibody levels.
Ss a ro is an extractable nuclear antigen ena composed of protein antigens of 52 kd and 60 kd combined with cytoplasmic rna species.
A guide for patients and their families author daniel wallace explains that ssa plays a role in systemic lupus and categorizes it as a cell surface component.
A positive ana test means that you have high levels of ana in your blood.
Anti ssa levels may be elevated in the following conditions.
The presence of both antibodies ss a and ss b strengthen the diagnosis of sjögren s syndrome and conveys prognostic information.
Sjögren s antibody ss b is present only if sjögren s antibody ss a is also detected.
Anti ro ssa antibodies are found in 40 90 of patients with systematic lupus erythematosus sle.
The ssa antibody can also show up in a blood test that is unrelated to sjögren s syndrome.
The antibodies can be detected years before symptoms of sle surface making them an effective diagnostic tool.
Ss a ro antibodies occur in patients with several different connective tissue diseases including sjogren syndrome an autoimmune disease that involves primarily the salivary and lachrymal glands up to 90 of cases.
In the book the lupus book.
Some people with autoimmune diseases may get a negative test result for ana but positive for other antibodies.
The ssa antibody is usually found with the ssb antibody which means there is typically an anti ssb blood test ordered with the anti ssa test.
In patients with sle high levels of anti ro ssa are correlated with elevated levels of ifn α.
Lupus erythematosus le 40 60 of.
Both anti ssa and anti ssa are usually absent in secondary sjögren s syndrome.