title: Immunoelectrophoretic quantitation of antithrombin III. Electroimmunodiffusion in agarose gels containing heparin.
abstract: Antithrombin III (AT-III), being an alpha2-globulin, will have an electrophoretic mobility in the presence of heparin like prealbumin in agarose gels. This phenomenon was utilized to quantitate AT-III from serum and plasma by electroimmunodiffusion (EID) for 90 min agarose gels containing 75 USP units of heparin/ml gel. The method permits a rapid quantitation of AT-III from serum, citrated plasma and EDTA plasma, and a positive correlation was observed between these values and those obtained by single radial immunodiffusion (SRI). This is in contrast to quantitation of AT-III by EID in gels containing no heparin where the values for plasma showed poor correlation with those obtained by SRI.
mesh_terms: D000991:Antithrombins / Q000032:analysis*; D002951:Citrates; D004492:Edetic Acid; D006493:Heparin; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis / Q000379:methods*; D012685:Sepharose; D013997:Time Factors
chemical_list: D000991:Antithrombins; D002951:Citrates; D006493:Heparin; D012685:Sepharose; D004492:Edetic Acid