| 111167-3 | Hydroxyproline Free (Urine) |
| 14784-3 | Hydroxyproline Free in 24 hour Urine |
| 2448-9 | Hydroxyproline Free |
| 2449-7 | Hydroxyproline Free (Urine) |
| 2450-5 | Hydroxyproline Free in 24 hour Urine |
| 30139-0 | Hydroxyproline Free in 24 hour Urine (qualitative) |
| 32022-6 | Hydroxyproline Free in 24 hour Urine |
| 32183-6 | Hydroxyproline Free (Urine) |
| 56685-1 | Hydroxyproline Free |