In a case of undifferentiated arthritis, presence of anti-cyclic citrullinated peptide (anti CCP) indicates strong possibility of which of the following?
Anticitrullinated peptide antibody test (Anti ccp) test is more specific than rheumatoid factor for diagnosis of rheumatoid arthritis. It may be positive very early in the course of the disease.
Rheumatoid arthritis
Systemic lupus erythematosis
Mixed connective tissue disorder
Reactive arthritis