I've never had an x-ray, MRI, ct scan, etc... of any of my joints but I have an RA dx. I am seropositive for rheumatoid factor, and I always assumed that my doctor found evidence of arthritis on physical examination 'cause he sure didn't order any tests except for bloodwork? I do believe that you can have arthritis, but it won't show up as physical evidence in your imaging tests for years.
Current dx: Rheumatoid Arthritis
Suspected dx: UCTD/Early Lupus
Current Meds: Enbrel, Plaquenil, Aciphex, Ultracet, Zyrtec, Allavert-D, Zantac, Tylenol PM
Past Meds: Relafen, Vioxx, Mobic, Voltaren, Sulfasalazine, Entocort, Prednisone, Humira, Reglan