Moore was provisionally suspended in June 2022 due to the presence of a prohibited substance in a sample she provided while competing in a WTA 250 event in Bogota, Colombia, where she lost in the final.
The ITIA had said her "A" sample contained Nandrolone metabolites and Boldenone. Both substances are on the 2022 World Anti-Doping Agency (WADA) Prohibited List.
Moore said she had never knowingly taken a banned substance in her career.
However, the ITIA said that an independent tribunal determined that contaminated meat consumed by her and another player, Chile's Barbara Gatica, in the days before sample collection was the source of the prohibited substance.
"Accordingly, no period of ineligibility was imposed on either player, and the provisional suspensions imposed on each player under the Tennis Anti-Doping Programme have been immediately lifted," the ITIA said.
Gatica, however, remains suspended from the sport due to separate Tennis Anti-Corruption Program offences, the ITIA added.
