Boxing gold medallist Algeria's Imane Khelif poses on the podium Photo: MOHD RASFAN / AFP
World Boxing will introduce mandatory testing to determine the eligibility of male and female athletes in time for next month's World Championships.
The testing will be in place for all of World Boxing's competitions.
National teams will be required to provide chromosomal certification or face sanctions under the new policy.
It would mean Paris Olympic gold medalist Imane Khelif of Algeria would be unable to compete until she underwent a test.
A New Zealand team of seven is currently in Britain preparing for the World Championships but have not undergone the tests yet.
In a statement World Boxing said: "The policy is designed to ensure the safety of all participants and deliver a competitive level playing field for men and women and means that all athletes over the age of 18 that want to participate in a World Boxing owned or sanctioned competition will need to undergo a once-in-a-lifetime PCR (polymerase chain reaction) of functional medical equivalent genetic screening test to determine their sex at birth and their eligibility to compete."
It means that all athletes who wish to take part in the 10 female weight categories at the World Boxing Championships in Liverpool will need to undergo a PCR or functional medical equivalent genetic screening test to certify their eligibility to box.
World Boxing's policy on 'sex eligibility' has been crafted by a working group of its medical and antidoping committee which examined medical evidence from a range of sources and spent nearly 12 months consulting with experts and studying legal, societal and sporting developments relating to the issue of eligibility by sex.
Under the policy, World Boxing will operate two categories as determined by sex: a men's category and a women's category.
To be eligible for the men's category, a competitor must be male at birth. To be eligible for the women's category, a competitor must be female at birth, the statement said.
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