Laboratory results on admission
| Parameter | Patient 1 | Patient 2 |
| Haemoglobin | ↓ | ↓ |
| Platelets | ↓ | ↓ |
| Schistocytes | Absent | Present |
| Creatinine | ↑ | ↑↑ |
| Lactate dehydrogenase | ↑ | ↑ |
| Fibrin degradation products | ↑ | ↑ |
| Fibrinogen | Normal | ↓ |
| Haptoglobin | ↓ | Normal |
| Direct Coombs test | Positive | Positive |
| Reticulocytes | ↑↑ | ↑ |
| LAC/aCL | Positive | Positive |
| ANA | Negative | Negative |