Factor
XIII Assays
Rare congenital abnormality (<200
cases)
Incidence :
Chronic D.I.C. –
secondary to Chron’s disease
leukemias
Ulcerative colitis
Decreased levels seen in:
surgery
Activity level
before hemorrhage occurs:
Below 5%
Assays for
factor XIII:
5.0 M Urea solubility test: (clot
dissolves <24 hours)
Chromogenic assay