| parent | Amino acids | LP18033-8 |
| child | 2-Amino-4-hydroxypteridine | LP200578-5 |
| child | 7,8-Dihydrobiopterin | LP200268-3 |
| child | 7-Isobiopterin | LP200448-1 |
| child | Biopterin | LP15450-7 |
| child | Isoxanthopterin | LP200430-9 |
| child | Neopterin | LP16216-1 |
| child | Sepiapterin | LP62201-6 |
| child | Tetrahydrobiopterin | LP31556-1 |
| child | Xanthopterin | LP200577-7 |
| child | Pterins pattern | LP200576-9 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Pterins |
| DisplayName | en-US | Pterins |
LOINC Version: 2.81