[Congenital deficiency of fibrin stabilizing factor [factor XIII)]. / Le déficit congénital en facteur stabilisant de la fibrine ou facteur XIII.

The authors report a new case of congenital deficiency of fibrin stabilizing factor. The defect is transmitted as an autosomal recessive trait. The earliest symptom is umbilical bleeding when the cord separates. The diagnosis is confirmed by the rapid dispersion of the clot in urea 5 M or monochloroacetic acid.