| 111119-4 | Phenylalanine/Creatinine (Urine) |
| 18475-4 | Phenylalanine/Creatinine (Urine) |
| 22683-7 | Phenylalanine/Creatinine (Urine) |
| 25970-5 | Phenylalanine/Creatinine in 24 hour Urine |
| 30055-8 | Phenylalanine/Creatinine (Urine) |
| 44348-1 | Phenylalanine/Creatinine in 24 hour Urine |
| 44349-9 | Phenylalanine/Creatinine (Urine) |
| 47981-6 | Phenylalanine/Creatinine in 24 hour Urine |