[2] Alekseyev tested positive for the anabolic steroid Dehydrochloromethyltestosterone (Oral Turinabol) in an out-of-competition control 27 June 2013 and was subsequently handed a two-year ban from sports.

[4] In May 2016, it was reported that Alekseyev was one of 14 Russian athletes, and nine medalists, implicated in doping following the retesting of urine from the 2008 Olympic Games.

If confirmed, under IOC and IAAF rules, he stands to lose all results, medals and records from the date of the original test to May 2016.

By 13 September 2016 his doping case and subsequent disqualification from the 2008 Summer Olympics was confirmed, and he and the Russian 4x400m relay team were stripped of their bronze medals.

This biographical article relating to Russian athletics is a stub.