| parent | Renal function | LP31398-8 |
| child | Nitrogen.nonprotein | LP15748-4 |
| child | Nitrogen | Body fluid | Chemistry - non-challenge | LP385408-2 |
| child | Nitrogen | Dialysis fluid | Chemistry - non-challenge | LP385409-0 |
| child | Nitrogen | Exhaled gas | Chemistry - non-challenge | LP385410-8 |
| child | Nitrogen | Stool | Chemistry - non-challenge | LP385411-6 |
| child | Nitrogen | Sweat | Chemistry - non-challenge | LP385412-4 |
| child | Nitrogen | Urine | Chemistry - non-challenge | LP385413-2 |
| parent | PULM | LP7840-4 |
| child | Nitrogen | Airway | Respiratory measures and Ventilator management | LP409065-2 |
| child | Nitrogen | Airway adaptor | Respiratory measures and Ventilator management | LP409066-0 |
| child | Nitrogen | Gas delivery system | Respiratory measures and Ventilator management | LP409067-8 |
| child | Nitrogen | Gas delivery system.expiratory limb | Respiratory measures and Ventilator management | LP409068-6 |
| child | Nitrogen | Gas delivery system.inspiratory limb | Respiratory measures and Ventilator management | LP409069-4 |
| PartDisplayName | en-US | Nitrogen |
| DisplayName | en-US | Nitrogen |
LOINC Version: 2.80
FHIR