Molly visited Friskis and Svettis in Karlstad on Monday to showcase their skills.

- First and foremost, she is looking for testosterone and anabolic steroids. She also takes other preparations, but we have chosen to keep that for ourselves in order to make it difficult for those who choose to cheat, says dog handler Joanna Sjöö from Swedish anti-doping.

In the clip you can see how Molly is working on nosing through cabinets that dog owner Joanna has prepared in advance.

Guy between 18 and 25 years

Doping at the gym has increased, mainly in younger age groups, but there are no clear measuring instruments that show how many athletes or regular gym visitors in Värmland use unauthorized preparations according to the Värmland sports expert in doping, Lars Andersson.

- We can say that the typical person who dopes himself is a guy who is between 18 and 25 years old, says Lars Andersson.

The National Sports Association is Sweden's national anti-doping organization and it is Svensk Antidoping that is responsible for the operative and preventive work.

As a member of the National Sports Federation, through membership, you have signed a contract which means that you must not refuse to take a doping test if required. If you refuse, you can be suspended from all sports for several years.

Unpublished checks

Molly may show up at any time to search for illegal drugs, but only at training facilities affiliated to the National Sports Federation.

- She is used for preventive purposes in the anti-doping work in Sweden, says Lars Andersson.

On the Swedish Anti-Doping website anyone can submit anonymous tips on suspected doping.