| CLASS | PULM | LP7840-4 |
| COMPONENT | Gas flow at 50% of forced expiration/Gas flow at 50% of forced inspiration^post bronchodilation | LP308837-6 |
| PROPERTY | RelVRat | LP6856-1 |
| TIME_ASPCT | Pt | LP6960-1 |
| SYSTEM | Respiratory system | LP7556-6 |
| SCALE_TYP | Qn | LP7753-9 |
| parent | Clinical terms not yet categorized | LP248771-0 |
| CLASSTYPE | Clinical class | |
| ORDER_OBS | Observation | |
| EXAMPLE_UNITS | ratio | |
| EXAMPLE_UCUM_UNITS | {ratio} | |
| UNITSREQUIRED | N | |
| STATUS | ACTIVE |
| LONG_COMMON_NAME | en-US | FEF 50%/FIV 50% --post bronchodilation |
| LONG_COMMON_NAME | en-US | FEF 50%/FIV 50% --post bronchodilation |
| SHORTNAME | en-US | FEF 50%/FIV 50% p BD |
| LONG_COMMON_NAME | es-MX | Flujo de gas al 50% de la espiración forzada / Flujo de gas al 50% de la inspiración forzada :Sistema respiratorio :Punto temporal:RelVRat:Cuantitativo: |
LOINC Version: 2.81