The influence of polyethylene glycol precipitation and of ageing plasma and serum on the measurement of C3dg/d.
In plasma and serum samples, ageing results in excessive C3dg/d values when measured by electroimmunoassay. The use of polyethylene glycol, either in the preparation of the samples or in the electrophoretic gels, gives falsely low values.
D011232:Chemical Precipitation; D003176:Complement C3 / Q000032:analysis*; D015933:Complement C3d; D006801:Humans; D010949:Plasma / Q000276:immunology; D011092:Polyethylene Glycols; D013997:Time Factors
D003176:Complement C3; D011092:Polyethylene Glycols; D015933:Complement C3d