Topical anesthesia using TAC (tetracaine, adrenalin, and cocaine) produces "dirty urine": a word of caution.
Schwartz
R H
RH
Altieri
M
M
Bogema
S
S
D000328:Adult; D000772:Anesthesia, Local; D002648:Child; D002675:Child, Preschool; D003042:Cocaine / Q000008:administration & dosage / Q000652:urine*; D004837:Epinephrine / Q000008:administration & dosage; D005151:Facial Injuries / Q000601:surgery; D005189:False Positive Reactions; D006801:Humans; D015813:Substance Abuse Detection; D013748:Tetracaine / Q000008:administration & dosage
D013748:Tetracaine; D003042:Cocaine; D004837:Epinephrine