Redrose, these are not tests that are normally done on people for RA or SLE. I guess the only reason they would be done would be to test for celiac--the overall IgA is done as a control to make sure that you are actually producing IgA (which is my case I'm not). The only reason I ask if you've had it done is because many people with SLE and/or RA have undiagnosed celiac. And celiac can cause arthritis type symptoms, sometimes in lieu of any GI symptoms. I agree--lab tests only go so far, and they're actually short-sighted in many respects.
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