The general findings otherwise highlighted here (Figure 3, Figure 4 and Figure 5) complicate both clinical and laboratory test practice, since even a normal FVIII level may not always exclude the presence of an FVIII inhibitor (although it usually will), and a low level of FVIII does not necessarily reflect the presence of an FVIII inhibitor (since it may represent CHA or even von Willebrand disease [VWD]) [33]. The gene discussed is F8; the disease is platelet-type von Willebrand disease.