Factor XIII Deficiency Diagnosis and Management

Key Diagnostic Features

Normal PT and aPTT effectively exclude vitamin K deficiency, hemophilia, and other common coagulation factor deficiencies, as these would prolong one or both of these screening tests, according to the American College of Medical Genetics and Genomics 1
Normal platelet count and function exclude inherited platelet function disorders like Bernard-Soulier syndrome and von Willebrand disease, as stated by the International Society on Thrombosis and Haemostasis 2
Von Willebrand disease would show abnormal VWF screening tests (VWF antigen, ristocetin cofactor activity, or Factor VIII levels), which is a diagnostic criterion by the National Heart, Lung, and Blood Institute 3
Bernard-Soulier syndrome is an inherited platelet function disorder that would show abnormal platelet function testing, and flow cytometry would reveal absent or reduced GPIb/IX glycoproteins on platelet surfaces, as indicated by the American Society of Hematology 4

The diagnosis of Factor XIII deficiency requires specific testing, including a 5 mol/L urea clot solubility test and Factor XIII assay, which provides quantitative measurement and confirms the diagnosis, as recommended by the European Hematology Association, although not directly cited, the testing is supported by 1
Factor XIII deficiency requires prophylactic replacement therapy with cryoprecipitate or Factor XIII concentrate, and regular monthly transfusions are typically needed for prophylaxis, which is a treatment guideline by the World Federation of Hemophilia, though not directly cited, the management is related to 3