Draw blood in a plain red-top tube. Spin and separate within 1 hour of collection. send 1.0 mL serum refrigerated.
Room temp 28 days;Refrigerated 28 days; Frozen 28 days
Performed Mon/Wed Reports in 6-10 days
Assess patients with hereditary or acquired C2 complement deficiency due to hyper catabolism in hereditary angioneurotic edema, or loss as in vasculitis, glomerulonephritis, immune complex diseases. C2 deficiency is the most common complement deficiency (1 in 10,000) and is often associated with SLE.