| parent | Metanephrine.free | LP31520-7 | 
| child | Metanephrine Free [Mass/volume] in Serum or Plasma | 38494-1 | 
| child | Metanephrine Free [Moles/volume] in Serum or Plasma | 49700-8 | 
| child | Metanephrine Free/Creatinine [Molar ratio] in Serum or Plasma | 101177-4 | 
| STATUS | NotStated | 
| PartDisplayName | en-US | Metanephrine Free | Serum or Plasma | Chemistry - non-challenge | 
LOINC Version: 2.78