Abstract
Objective: The complement system is related to the lupus pathogenesis and genetics , because C1q and C2 deficiency associates with family incidence and low onset age . Active disease results in C3, C4 and CH50 low serum levels, in particular during glomerulonephritis or haematologic features. The objective of the study is establish the association of serum levels of C3, C4, CH50 at prese…