出血性疾患
出血性疾患 (first aid step1 2006 p.301)
| Disorder | platelet count | bleeding time | PT . | PTT . |
| qualitative platelet defects | － | ↑ | － | － |
| thrombocytopenia | ↓ | ↑ | － | － |
| hemophilia A or hemophilia B | － | － | － | ↑ |
| von Willebrand's disease | － | ↑ | － | ↑ |
| DIC | ↓ | ↑ | ↑ | ↑ |
| Disorder | platelet count | bleeding time | PT . | PTT . |
| qualitative platelet defects | － | ↑ | － | － |
| thrombocytopenia | ↓ | ↑ | － | － |
| hemophilia A or hemophilia B | － | － | － | ↑ |
| von Willebrand's disease | － | ↑ | － | ↑ |
| DIC | ↓ | ↑ | ↑ | ↑ |