Can a person have a negative ra titre have rheumatoid arthritis?

Arthritis: There are many types of arthritis, some of which are degenerative or post-traumatic. The other general kind of arthritis is inflammatory. The classification of type requires a history, examination, diagnostic x-rays, and if indicated, blood tests. Treatment is determined by type of arthritis. Not all patients with RA have positive blood tests. Occasionally, blood tests are done a few times.