The International Boxing Association, which ran those championships and ordered the disqualifications, offered little insight into the reasons for the boxers’ removal, saying in a statement that the disqualifications came after “the athletes did not undergo a testosterone examination but were subject to a separate and recognized test.”
The association said that test, the specifics of which it said were confidential, “conclusively indicated that both athletes did not meet the required necessary eligibility criteria and were found to have competitive advantages over other female competitors.”
Your own link says you don't know what the fuck the results of that test were or what it was for.