Related Experiment Video
Updated: Oct 22, 2025

High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry
Published on: April 23, 2019
Cases reports: Unintended anti-doping rule violation after dorzolamide use several months prior to a doping control
Andrzej Pokrywka1, Monika Skrzypiec-Spring2, Jarosław Krzywański3
1Department of Biochemistry and Pharmacogenomics, Medical University of Warsaw, Warsaw, Poland.
Abstract:
The use of specific medicine up to several months before a doping control is not be reported on the doping control form, while the drug could then still be detectable in urine in case of a very slow elimination. It may lead to a positive test result. For example, dorzolamide, a carbonic anhydrase inhibitor for topical ophthalmic application, has a very slow elimination rate via the renal route (half-life > 4 months). This substance can be a source of unintended anti-doping rule violations.
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