| parent | Metanephrine.free | LP31520-7 | 
| child | Metanephrine Free [Mass/time] in 24 hour Urine | 32634-8 | 
| child | Metanephrine Free [Moles/time] in 24 hour Urine | 99047-3 | 
| child | Metanephrine Free [Moles/volume] in Urine | 99048-1 | 
| child | Metanephrine Free/Creatinine [Mass Ratio] in Urine | 44337-4 | 
| STATUS | NotStated | 
| PartDisplayName | en-US | Metanephrine Free | Urine | Chemistry - non-challenge | 
LOINC Version: 2.78