| parent | Gastrointestinal function | LP31419-2 |
| child | Acidity.titratable | Gastric fluid | Chemistry - non-challenge | LP386731-6 |
| child | Acidity.titratable | Urine | Chemistry - non-challenge | LP386732-4 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Acidity.titratable |
| DisplayName | en-US | Acidity.titratable |
LOINC Version: 2.81