On the dermal absorption of cocaine.

Abstract:

:A 5-mg dose of cocaine free base applied to the volar forearm skin surface of a volunteer resulted in a maximal urinary benzoylecgonine concentration of 55 ng/mL at 48 h, using discrete urine specimens. A total of 58 micrograms of benzoylecgonine, representing 1.2% of the dose, was excreted in the 96-h urine. An identical trial using 5 mg of cocaine hydrochloride resulted in a maximal urinary benzoylecgonine concentration of 15 ng/mL at 24 h. We conclude that dermal absorption of cocaine represents a minor, but significant route of exposure to this drug that needs to be considered when interpreting low-level urine drug testing results.

journal_name

J Anal Toxicol

authors

Baselt RC,Chang JY,Yoshikawa DM

doi

10.1093/jat/14.6.383

subject

Has Abstract

pub_date

1990-11-01 00:00:00

pages

383-4

issue

6

eissn

0146-4760

issn

1945-2403

journal_volume

14

pub_type

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