Pathology · single question
A lab test reveals a high anti-Ro (SSA) antibody titer. Most likely diagnosis?
Show answer and explanation
Correct answer: A. Sjögren's syndrome
- A. Correct. Anti-Ro (SSA) and anti-La (SSB) are characteristic of Sjögren's syndrome.
- B. RA is associated with RF and anti-CCP.
- C. SLE can have anti-SSA but is most specifically linked to anti-dsDNA / anti-Sm; with dry-eye/dry-mouth context Sjögren is best.
- D. Sarcoidosis has elevated ACE, not anti-Ro.