Glossary

Glossary


Anti-La
This test measures autoantibodies that target RNA, which is related to DNA and is critical to cells' ability to make the proteins they need. Anti-Ro is linked to light sensitivity and is found in 30 percent of systemic lupus erythematosus patients. Anti-La is found in 15 percent of lupus patients. Positive tests do not necessarily point to a diagnosis of systemic lupus erythematosus, however, because these autoantibodies are more prevalent in Sjögren's syndrome patients.
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