| parent | Guanidinoacetate | LP30825-1 | 
| child | Guanidinoacetate/Creatinine | DBS | Chemistry - non-challenge | LP440619-7 | 
| child | Guanidinoacetate/Creatinine | Serum or Plasma | Chemistry - non-challenge | LP441000-9 | 
| child | Guanidinoacetate/Creatinine | Urine | Chemistry - non-challenge | LP382616-3 | 
| STATUS | ACTIVE | 
| PartDisplayName | en-US | Guanidinoacetate/Creatinine | 
| DisplayName | en-US | Guanidinoacetate/Creatinine | 
LOINC Version: 2.78