How common is a positive ana in scleroderma?

60-90%: More than half of patients with scleroderma have a positive ANA test.

Common: Ther are some special ANA patterns that are seen depending on what type of scleroderma you have. People with limited scleroderma can have an anti-centromere pattern. People with diffuse scleroderma can have an anti- nucleolar pattern and can also have certain autoantibodies such as scl-70. If you have a scleroderma overlap syndrome you may have other patterns depending on the overlap.