An Electrophoretic and Quantitative Analysis of Coagulation Factor XIII in Normal and Deficient Subjects

Abstract
Previous electrophoretic studies of the A and B subunits of factor XIII have revealed considerable genetic heterogeneity. The electrophoretic forms were investigated and the A and B subunits were quantitated in a family with inherited factor XIII deficiency. The deficiency in this family was apparently due to a null allele at the locus controlling the A subunit. All family members had decreased levels of B subunit. There was no difference in thrombin activated transamidase activity between normal individuals with the 3 commonly occurring electrophoretic phenotypes of the A subunit.