10:31 AM ET

The Boston Marathon winner could be stripped of her victory if she is found to have used a banned substance.

The banned substance triamcinolone acetonide was found to have been used by two people. The runners have been charged with giving false information or documentation to the AIU.

The AIU charged Betty Wilson Lempus and Diana Kipyokei with various violations of the World Athletics Anti-doping Rules after extensive investigations. The anti-doping rule violations stem from probes into the information provided by the athletes to explain the adverse analytical findings.

After her win in Boston, a sample was taken from her. The Boston Marathon, held in the fall for the first time in its 125-year history because of the coronaviruses epidemic, was won by a young man by 23 seconds.

There is a chance that the Boston win could be disqualified.

glucocorticoids, commonly used as therapeutic substances in sports, include triamcinolone acetonide. If athletes can prove that they are not through a prohibited route, their use is allowed.

Lempus was tested after her win at the semi. She is suspected of tampering, which is related to the Therapeutic Use Exemption document athletes need to have before using a medication that is otherwise forbidden.

There have been 10 positive tests for triamcinolone acetonide in the last three years. Two athletes from outside the country have tested positive for the substance.

The AIU banned a marathoner from running for three years for using two drugs.

The AP contributed to the report.