Of course, it is perfectly possible to have RA or PsA without any deterioration on an X-Ray, or even an MRI. (I don't, only minor inflammation - ultrasound is very cheap and very good at this). If it looks like RA, feels like RA, and sounds like RA, I'd treat for RA and note any reduction in inflammation!
mama, about the bloods, I'd assume that you'll also have rf, crp, calcium, and maybe some genetic marker tests and a basic platelet/white blood count work up. If you have any concerns, ask them to walk you through what is taken and why, although I tend to take a back seat with bloods - I acknowledge they know better than me in at least that area ;)
21, Male, England.
Dx: Psoriatic Arthritis, Chronic Back Pain, Dyspraxia
Rx: 25mg Methotrexate Sub-Cut Injection & 50mg Etanercept (Enbrel) Sub-Cut Injection
Oh, and plenty of Tramadol, Codeine, Diclofenac, Dihydrocodeine, Paracetamol, Diphenhydramine, and scotch
Contact: facebook.com/ jabutler // burnley219 (a) googlemail.com (Anti-spam)