Other
Causes of Decreased vWF
Group O
Lowest levels of vWF
Blood type influences levels:
Highest incidence of von
Willebrand disease
levels of vWF in other types from
lowest to highest:
Type A
Type B
Type AB
Estrogen
vWF increases during
pregnancy decreases after delivery
Since
vWF is an acute-phase protein it is increased in
both
Hormone influence:
Exercise & stress: