Investigations for case 2, aged 5
| Activated partial thromboplastin time | 42 seconds | Normal 29–40 seconds |
| Partial thrombin time | 14 seconds | Normal 11–15 seconds |
| Factor VIII:C assay | 0.39 iu/ml | Normal 0.5–1.5 iu/ml |
| vWF:Ag | 0.64 iu/ml | Normal 0.5–1.5 iu/ml |
| vWF:Act | 0.76 iu/ml | Normal 0.5–1.5 iu/ml |