| parent | Triiodothyronine | LP15922-5 |
| child | Triiodothyronine Free | Serum or Plasma | Chemistry - non-challenge | LP381529-9 |
| parent | Triiodothyronine | LP15922-5 |
| child | Triiodothyronine Free | Serum or Plasma | Chemistry - challenge | LP387151-6 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Triiodothyronine.free |
| DisplayName | en-US | Triiodothyronine Free |
LOINC Version: 2.81