I posted on here at the end of last year re my low white blood cell count (leukopenia) and battle with infection. I have been referred to an immunologist and have my appointment on 24 Jan. I know this was probably a mistake but I have done a lot of googling on the subject of leukopenia and can rule out several of the causes that are given e.g. steroid treatment, HIV (my test was negative), chemo, diabetes (tested neg for this), which basically leaves cancer or lupus as the cause. I am suspicious of lupus as 3 years ago I was diagnosed with an unknown ("undifferentiated") autoimmune condition. They couldnt pin it down to any known illness but said it could well evolve into something. However, if it isnt lupus, that basically leaves cancers such as lymphoma, myeloma and so on. I have some symptoms common to both conditions. Either way, it looks serious.