Radeviča is one of the best-known athletes in the country.
Since 2017 she served as the president of the Latvian Athletics Federation - one of the bodies with the greatest responsibility for promoting clean competition in sports - but stepped down shortly after the accusations were made.
Radeviča has tested positive for oxandrolone, an anabolic steroid and has since been hit with an interim ban.
She has insisted that she did not consume doping wittingly, but has not contradicted the results of the test.
She retired from professional sports in 2012, after narrowly missing out on a medal in London. She currently holds the Latvian women's long-jump record.
Radeviča is the third athlete from the London final to be disqualified for doping following retests.