| parent | EYE.ERG.NEI | LP203648-3 |
| child | Reference electrode | Electroretinography device | NEI eyeGENE electroretinogram | LP408455-6 |
| child | Reference electrode | Head | NEI eyeGENE electroretinogram | LP408456-4 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Reference electrode |
| DisplayName | en-US | Reference electrode |
LOINC Version: 2.81