M.L.
Lupus hairloss is mostly caused by lesions/rash on the scalp, not from internal hair loss. Sometimes, hairloss will be caused by inflammation or swelling, so you should be able to see if that is the factor when the Dr. checks your scalp. So if you don't have the scalp sores or scalp inflammation, than lupus is most likely not the reason for hair loss. I also had similar bloodwork and had to go to a rhuematologist for possible ra or lupus and was also having hairloss at the time, so I really focused my research on that. While ra has the symptom of symmetrical joint pain, other forms of arthritis do not.
Hair loss can be attributed to thryroid problems, hormonal changes, stopping breastfeeding, some medicine side effects, alopecia, trauma or stress. Mechanical hairloss (meaning not from within the root) is from stress we put on our hair, such as chemical breakage, too much combing/brushing especially when hair is wet, too tight ponytails...
I am a hairstylist and hair goes through resting periods. So, in essence, one side of your head may be in a growing phase, while the back of your head may be in a resting phase and another part of your head wil be in the fall out phase. So, it's fairly normal for hair to always be falling out... They way you can tell if you have hairloss as a women that is not typical, is if there are areas in which you are seeing the scalp more, and if you put your hair in a ponytail, and the diameter is much thinner than usual.