| parent | Platelet factor | LP30937-4 |
| child | Platelet factor 4 Ag | LP39435-0 |
| child | Platelet factor 4 | Platelet poor plasma | Coagulation | LP394309-1 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Platelet factor 4 |
| DisplayName | en-US | Platelet factor 4 |
LOINC Version: 2.81