| parent | Butyrylcarnitine+Isobutyrylcarnitine (C4) | LP66333-3 | 
| child | Isobutyrylcarnitine (C4) | DBS | Chemistry - non-challenge | LP381605-7 | 
| child | Isobutyrylcarnitine (C4) | Serum or Plasma | Chemistry - non-challenge | LP381606-5 | 
| STATUS | ACTIVE | 
| PartDisplayName | en-US | Isobutyrylcarnitine (C4) | 
| DisplayName | en-US | Isobutyrylcarnitine (C4) | 
LOINC Version: 2.78