Have you seen a rheumotologist? They are the Drs for auto-immune diseases like Lupus.
One way to find a Rheumy interested in Lupus is to check out
https://www.lupus.org and find your local chapter. Then contact the local chapter to see which of your local rhemies is on their advisory board. Those very often are the Drs actually interested in helping!!!
Lupus should be diagnosed by 4 of 11 symptoms (see diagnosing lupus link below), not by blood work. There is no blood tests that by itself can determine if you do/don't have Lupus or other auto-immune disorders.