What would be the main cause of low total protein and low urea in sle? many thanks.

Protein loss: Protein loss can Occur with loss of protein from the urinary system or the intestinal system. The low BUN has to be put in perspective with a clinical setting. Is this also depends with the rest of your clinical lupus involvement is

Just numbers: Low serum urea never means anything worrisome; most often you're just not eating a whole lot of protein. Reference ranges are set so that a few percent of healthies fall outside on either end. I'm a lab specialist and want to reassure you that these mean little outside the clinical picture. Low total protein may indicate chronic inflammation without antibody activation, urinary wasting, others.