| 105952-6 | O-nortramadol (Urine) |
| 73973-0 | O-nortramadol (Blood) |
| 82974-7 | O-nortramadol, Plasma or Blood (confirmatory method) |
| 86453-8 | O-nortramadol (Urine, qualitative) |
| 90750-1 | O-nortramadol (oral fluid) (Saliva, confirmatory method) |
| 92639-4 | O-nortramadol (Urine, confirmatory method) |
| 93721-9 | O-nortramadol in Meconium (confirmatory method) |
| 95799-3 | O-nortramadol (Urine, qualitative, screen method) |
| 97292-7 | O-nortramadol in Cord tissue (qualitative, screen method) |
| 97293-5 | O-nortramadol in Cord tissue (qualitative, confirmatory method) |
| 99080-4 | O-nortramadol (Urine, qualitative, confirmatory method) |