After having positive tests (ANA, ESR, SED and SS-B), my labs suddenly came back WNL in February, with the exception of CRP and WBC, which both remain very low.
I understand that CRP can be loW in a SLE flare (someone correct me if I'm wrong). I am currently being evaluated for polymyositis and MS (which I highly doubt I have). My CPK and aldolase, blood tests that show muscle proteins that have leaked into the blood, are normal, which are sometimes elevated in polymyositis.
My point being, labs don't always tell the whole story. If your doc insists on treating you based solely on labs-find another doctor.