Ethiopian-born Swedish runner Abeba Aregawi was left off the Olympic team, with the nation’s track and field federation saying there was uncertainty concerning her medical and physical status on Sunday.
Aregawi, the 2013 World 1500m champion, had a four-month suspension after testing positive for meldonium lifted on Thursday.
That left little time for Sweden to decide whether or not to reinstate Aregawi on its roster for the Olympics.
Aregawi, 26, was suspended indefinitely in February after failing a drug test for meldonium, the substance that later gained widespread media attention after it was learned that many Russians, including Maria Sharapova, also failed tests.