It is good that she is taking preventative steps (Plaquenil) while still searching for definitive answers.
I think she is being honest, the tests are simply to get some baseline numbers. Just from that, I'd guess you are around 50 -- if a lot younger than that, maybe she's got something on her mind but I don't know what it might be.
Sounds like you are with a decent Dr, so try to be patient and let her do her job..it can be frustrating, as with these things diagnosis often takes forever. But getting treatment is much more important than a firm dx, and it sounds like she's prepared to do what it takes.
Keep in touch,
Lynnwood, Lupus & Sjogren's ModeratorDIAGNOSING LUPUS & LUPUS RESOURCES
"Life is far too important to be taken seriously" - Oscar Wilde