All individuals in LOINC
| Label | Id | Description |
|---|---|---|
| 4-Methoxybutyrylfentanyl | LP411412-2 | |
| 4-Methoxybutyrylfentanyl | Urine | Drug toxicology | LP411624-2 | |
| 4-Methoxybutyrylfentanyl:MCnc:Pt:Urine:Qn:Confirm | 93461-2 | |
| 4-Methylethcathinone | LP248998-9 | |
| 4-Methylethcathinone | MTHU056602 | |
| 4-Methylethcathinone | Urine | Drug toxicology | LP389745-3 | |
| 4-Methylethcathinone:MCnc:Pt:Urine:Qn:Confirm | 86192-2 | |
| 4-Methylphenethylacetylfentanyl | MTHU063465 | |
| 4-Methylphenethylacetylfentanyl | LP411434-6 | |
| 4-Methylphenethylacetylfentanyl | Urine | Drug toxicology | LP411629-1 | |
| 4-Methylphenethylacetylfentanyl:MCnc:Pt:Urine:Qn:Confirm | 93472-9 | |
| 4-Pyridoxate | MTHU027251 | |
| 4-Pyridoxate | LP15304-6 | |
| 4-Pyridoxate | Serum or Plasma | Chemistry - non-challenge | LP385160-9 | |
| 4-Pyridoxate:MCnc:Pt:Ser/Plas:Qn | 1688-1 | |
| 4-Tert-Butylphenol | MTHU027428 | |
| 4-Tert-Butylphenol | LP33276-4 | |
| 4-Tert-Butylphenol | Urine | Drug toxicology | LP387283-7 | |
| 4-Tert-Butylphenol:MCnc:Pt:Urine:Qn | 35586-7 | |
| 4-hydroxycoumarins | MTHU047399 |