| parent | Phenylalanine | LP15792-2 |
| child | Phenylalanine/Tyrosine | DBS | Chemistry - non-challenge | LP384241-8 |
| child | Phenylalanine/Tyrosine | Serum or Plasma | Chemistry - non-challenge | LP384242-6 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Phenylalanine/Tyrosine |
| DisplayName | en-US | Phenylalanine/Tyrosine |
LOINC Version: 2.81