In 2014, Davidenok tested positive for Anabolic Steroids at the Tour of Qinghai Lake and the Tour de l'Avenir, a fourth such positive test for Continental Team Astana within seven weeks.

He was suspended for two years by the UCI, losing his overall win at the Tour of Qinghai Lake in the process.

[3] In November 2019, Davidenok returned a positive doping test for EPO and the 2019 Tour of Fuzhou.

In December 2021, he was banned for eight years, eligible to return to competition in April 2028.

This biographical article relating to Kazakhstani cycling is a stub.