Wikipedia tells the story of some alleged fragments of Hitler's skull that were tested in 2009:
In May 1946, SMERSH agents recovered from the crater where Hitler was buried two burned skull fragments with gunshot damage. These remains were apparently forgotten in the Russian State Archives until 1993, when they were re-found. In 2009 DNA and forensic tests were performed on the skull fragment, which Soviet officials had long believed to be Hitler's. According to the American researchers, the tests revealed that the skull was actually that of a woman and the examination of the sutures where the skull plates come together placed her age at less than 40 years old.
These claims are repeated in many places, such as The Guardian.
The Daily Telegraph reports that Soviet officials continue to maintain that it is the skull of Hitler.
Lieutenant-General Vasily Khristoforov, the chief archivist at the federal security service [...] insisted that the security service had no reason to question the authenticity of the skull fragments in its possession.
These claims are being used to fuel speculation that Hitler did not die in a bunker in 1945 - e.g. as reported in the Daily Express:
Fantasists were given added ammunition he didn't die in his Berlin bunker when 2009 DNA tests on skull fragments found near the bunker and believed to be his, turned out to belong to a woman.
So is there independent research to confirm or disregard that the skull fragment in question is of a young woman?