| parent | Hydroxyproline.free | LP29068-1 | 
| child | Hydroxyproline Free [Mass/time] in 24 hour Urine | 2450-5 | 
| child | Hydroxyproline Free [Presence] in 24 hour Urine | 30139-0 | 
| child | Hydroxyproline Free [Moles/volume] in 24 hour Urine | 32022-6 | 
| child | Hydroxyproline Free [Moles/time] in 24 hour Urine | 14784-3 | 
| child | Hydroxyproline Free [Mass/volume] in Urine | 2449-7 | 
| child | Hydroxyproline Free [Moles/volume] in Urine | 32183-6 | 
| child | Hydroxyproline Free/Creatinine [Ratio] in 24 hour Urine | 56686-9 | 
| STATUS | NotStated | 
| PartDisplayName | en-US | Hydroxyproline Free | Urine | Chemistry - non-challenge | 
LOINC Version: 2.78