| parent | Thyroxine | LP15900-1 |
| child | Thyroxine uptake | Serum or Plasma | Chemistry - non-challenge | LP381521-6 |
| parent | Thyroxine | LP15900-1 |
| child | Thyroxine uptake | Serum or Plasma | Chemistry - challenge | LP387148-2 |
| PartDisplayName | en-US | Thyroxine uptake |
| DisplayName | en-US | Thyroxine uptake |
LOINC Version: 2.77
FHIR