on the other hand , although a good correlation ( n = 22 , r = 0.62 , p less than 0.01 ) between sa and esr was revealed in sle patients , sa was inapplicable as a marker of disease activity in sle because of a poor correlation between sa and anti-dna antibody or serum complement which is mainly used as a marker of disease activity and a guide to treatment .
C0229671
serum
C0009498
complement