preferred_name: Volatile drugs negative &#x7C; Urine &#x7C; Drug toxicology
preferred_name_lc: volatile drugs negative &#x7c; urine &#x7c; drug toxicology
label: Volatile drugs negative &#x7C; Urine &#x7C; Drug toxicology
label_lc: volatile drugs negative &#x7c; urine &#x7c; drug toxicology