1) Physiologic changes in the concentration of Anti-endothelial Cell Antibodies (AECA)
2) Pathologic changes in the concentration Anti-endothelial Cell Antibodies (AECA)
a) Increased Anti-endothelial Cell Antibodies (AECA) in:
Primary vasculitides (Kawasaki syndrome, Wegener’s granulomatosis)
Secondary vasculitides (vasculitis associated with RA, SLE, etc.)
SLE
Systemic vasculitis

Reference values
dependent on method: negative