 Leading up to the Summer Olympics, Solo received a public warning from the U.S. Anti-Doping Agency (USADA) after a June 15 urine test concluded the banned substance canrenone had been detected.Solo said in a statement she had been prescribed a pre-menstrual medication and was not aware it contained any banned substances.She cooperated with the USADA and provided them with the necessary information to prove that it was a mistake.