Russia's Natalya Antyukh is to be officially stripped of her 400m hurdles title ©Getty Images

Russia's Natalya Antyukh has had her results from the 2012 Olympic Games in London officially disqualified, allowing a reallocation of medals from the women's 400 metres hurdles final, more than 10 years later.

Antyukh had her results from the Games officially disqualified in October, but was allowed time to appeal the decision.

Following the expiration of the 45-day deadline, she had all results from July 15 in 2012 to June 29 the following wiped from her record, including the gold medal-winning run at London 2012.

This means Lashinda Demus from the United States is set to be awarded the gold medal retrospectively.

Demus was pipped in a photo finish with Antyukh in the final, with the Russian crossing the line in 52.70sec to the American's 52.77.

Czech Republic's Zuzana Hejnová, who would go on to win back-to-back World Championships titles in 2013 and 2015, has been promoted to silver, while Jamaican Kaliese Spencer will receive the bronze medal.

The Athletics Integrity Unit (AIU) charged the hurdler based on historical data at the former World Anti-Doping Agency (WADA)-accredited laboratory in Moscow.

Antyukh, now 41, was given a four-year-ban last year and had already had results wiped from June 30 in 2013 to December 31 in 2015.

The United States' Lashinda Demus, left, narrowly missed out in the women's 400m hurdles final to Natalya Antyukh, at London 2012 but will now be officially upgraded to the gold medal ©Getty Images
The United States' Lashinda Demus, left, narrowly missed out in the women's 400m hurdles final to Natalya Antyukh, at London 2012 but will now be officially upgraded to the gold medal ©Getty Images

World Athletics has changed its results on its website, with the AIU confirming in a statement that the International Olympic Committee (IOC) could now award the medals as planned.

"The IOC may now proceed with the reallocation of medals and the update of the IOC database," read the AIU statement.

"The AIU remains committed to investigating all cases of potential violations and securing the appropriate outcomes. 

"The integrity of the sport of athletics is our utmost priority and we are pleased, in this instance, that athletes who competed fairly at the highest level will ultimately be acknowledged as the rightful medal winners."

AIU head Brett Clothier added that it was important to ensure "clean and fair competition and results, even if a decade later".

Antyukh is one of a record 46 Russian competitors at London 2012 disqualified for doping, leading to the country being stripped of 17 medals, including nine in athletics.

She also won silver in the women's 4x400m relay at London 2012, but this medal was already stripped six years ago when her team-mate Antonina Krivoshapka was given a doping ban and her results were disqualified.

Her results are not disqualified from before July 2012, meaning her 2011 world bronze and 2010 European gold medals - as well as her Athens 2004 400m bronze - still remain in her possession.