Conventional Rapid Latex Agglutination in Estimation of von Willebrand Factor: Method Revisited and Potential Clinical Applications

Table 1

Test score for qualitative latex agglutination test for VWF : Ag.

Test score	Size of the agglutinated beads	Appearance of the background	Rapidity of the agglutination
1+	Small clumps	Cloudy	>2 min
2+	Small clumps	Cloudy	>1 min
3+	Small/large clumps	Clear	>30 sec
4+	Large clumps	Clear	<30 sec

VWF : Ag: von Willebrand factor antigen.