| parent | OB.US | LP7830-5 |
| child | Study observation.general 1st trimester | Fetus | OB ultrasound | LP416323-6 |
| child | Study observation.general 1st trimester | Fetuses | OB ultrasound | LP416324-4 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Study observation.general 1st trimester |
| DisplayName | en-US | Study observation.general 1st trimester |
LOINC Version: 2.81