As values of the VWF:AG between 50 and 80% cannot be safely assigned a specific VWD type 3 phenotype, because VWD-carriers and VWD-unaffected individuals may both show values within this range (Goodeve and James 2014; Gadisseur et al. 2013), our genetic test is especially beneficial to differentiate those pigs. The gene discussed is VWF; the disease is von Willebrand disease 3.