"There are known cases where minute amounts of a diuretic have been found in paracetamol" - Michel Hessmann's positive doping test down to contaminated medicine?
Cycling
Not since the 2023 Glasgow World Championships has Michel Hessman been seen in the professional peloton. As he awaits a verdict in his protracted doping case however, Dutch doping expert Douwe de Boer believes he may have an answer.
De Boer has plenty of experience in similar cases having previously helped Alberto Contador in his clenbuterol case and Polish footballer Bartosz Salamon, who also tested positive for a very small amount of chlorthalidone in April 2023. “The similarities between the cases of Salamon and Hessmann are easy to find,” de Boer tells Wielerflits.
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The problem for Hessman is that the burden is on him to prove where the positive test came from if not from doping. “And be able to prove that you have actually used this medicine. They give six examples that you can comply with. This is a fairly difficult assignment,” says de Boer. “In the production process at a pharmaceutical company, several medicines manufactured. It is possible that minute residues of a previously produced medicine are found in another medicine. For example, there are known cases where minute amounts of a diuretic have been found in paracetamol and other painkillers.”
The perception of allowing Hessman to walk away scot-free after a positive doping test is also something that could work against the 22-year-old of Team Visma | Lease a Bike. "This is quite a politically sensitive subject, because we are setting a precedent when minute amounts of a certain substance are found in someone," as de Boer explains.
"You really have to take a decent dose (to have any benefit ed.). Given the minimal amount of chlorthalidone found in Hessmann, this is not plausible," de Boer concludes. "From what I understand, a German expert also demonstrated this to the Freiburg public prosecutor's office and the criminal investigation into Hessmann's doping case was dismissed, partly on the basis of this information.”
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Kieran WoodDeputy Editor-in-Chief
Kieran Wood is a sports journalist based in Wales and has been active in journalism since 2022. He regularly contributes to DartsNews.com and CyclingUpToDate.com, where he covers professional cycling and darts. In cycling, his work includes liveblogs from major races, including the Tour de France, the Giro d’Italia, and La Vuelta a España, alongside race reports and analysis. He has also conducted interviews with professional riders.
His reporting spans the full racing calendar, from one-day classics to stage races, with a focus on accurate, real-time coverage and clear contextual analysis. For statistics, results, and historical context, he regularly uses resources such as ProCyclingStats. To support reporting on rider activity and training context where relevant, he also references Strava.
In his work, Kieran places strong emphasis on careful sourcing, editorial accuracy, and updating articles as new, verified information becomes available.
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- He is boring
leedorney08-11-2026 - To Twoje przemyślenia te bla, bla :)
Dariusz08-11-2026 - Uwielbiam patrzeć, jak wyjeżdża na czoło peletonu i zaczyna się rzeź...
Dariusz08-11-2026 - Yeah, unreal.
parisbound0008-11-2026 - there needs to be space in life for pointless comments!Ketterechts08-11-2026
- That is a very lazy way of putting it but so far on this website it seems like everyone is happy to look at everything lazily, even things that annoy them intensely. All they want to do is state their feeling and position but ask most to analyse a problem or come up with solutions or improvements and you’re stunned by silence. Nobody even really knows how this all happens. It’s very simple and quick to just say the UCI did it but I bet you they didn’t, I bet you not more than 2 people were involved, more likely just 1. The UCI may be ultimately responsible but it is not their decision, this is about hierarchy, power and delegation. The fact that protest is possible also means it isn’t over and that MORE people could get involved for a thorough review which could throw up anything. It is highly likely it was a sole commissar who decided and has that power in a first round. Therein might lie the problem the UCI has to consider, is it acceptable to give so much authority to one single person when it is quite possible for them to have a natural bias or be too easily susceptible to imposed bias. Who is to say an individual in this position isn’t susceptible to collaboration with outside players with interests in the results, nations, families, teams, betting companies, etc. On the one hand we have sports where these problems have been worked on way more to reduce such problems, on the other hand we have sports with far stricter and more draconian rules not even concerning safety or obstruction that nobody really questions like false starts or stepping out of lane or zones in athletics. If cycling hastowork on itself, it would be good if protagonists (all kinds) would start doing a little more than just moaning over outcomes.Jumpyjohn08-11-2026
- Yes, so why not make comments less pointless?Jumpyjohn08-11-2026
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Rafionain-Glas08-11-2026 - There really was nothing in it. Schreiber was so much faster, and Brand was fighting to stay in the wheel in the sprint. Schreiber did move a bit, but to say she closed the door doesn't make sense because Brand couldn't enter it anyway, abd she wasn't impeded.
Rafionain-Glas08-11-2026 - He should have been allowed to go to Movistar. Right now both arent a good fit for each other and are just wasting each other's time and effortabstractengineer08-11-2026
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