A low white blood count can be associated with lupus. An oncologist is, as I recall, a cancer doctor. A hemtalogist is the "blood" doctor.
The reason why the nurse said that you have the lupus anti-coagulant but have not met the criteria for lupus is just that. Someone can have the lupus anti-coagulant but not have lupus.
To meet the criteria, you need to have four of the eleven symptoms listed at the college of rheumatology's website.
As always, there are a lot of things that could be going on with you. Even after seeing a rheumatologist, hardly anyone gets an immediate diagnosis. I think I waited six months or longer for my lupus diagnosis.
There are things that you can do to help your doctor get a diagnosis
1) keep a diary everyday of anything that happens...Did you have a headache that day? Nausea? Joint pain? If so, where and for how long? Did you have a fever? You get the idea.
2) if you saw other doctors before the current one, go and get all of your medical records form these other doctors.
3) get all of your lab results, past and present. Organize them and turn them over to the lead doctor.
4) if you are really worried about lupus, you can ask if the following tests have been done...Ana (the results are given in a ratio formula), sed rate (which I think you said was high in the past), c reactive protein, double stranded dna, c3 & c4 levels, etc. You can go to
www.Lupus.Org and can retrieve a more thorough list of blood tests.
Remember you know your body best...So let the doctor know everything that has bothered or concerned you!
I hope this helps a little.
Hugs,
ladybrannon