I'm sure you know that protein in the urine is frequently an indication of a kidney problem and it needs to be checked out. It could be lupus, or kidney disease, or perhaps nothing, but you should look into it further. Let us know how you make out.
DX: Kidney Disease, questionable Lupus Nephritis 2002
DX: Raynaud's Phenomenon and Lupus 2005
DX: Anorexia and Hypokalemia 2006
meds: plaquenil, lasix, klor-con