Men who register with their GP as women are being routinely invited to breast cancer screenings and smear tests by the NHS.
Conversely, guidance for Public Health England says that women registered as men will not ordinarily be offered the tests, even if they have not undergone surgery.
The NHS position has been described as “immoral and dangerous” political correctness that would put lives at risk.
Patients may change their birth sex in their medical history even without a gender recognition certificate or ‘amended’ birth certificate.
The guidance exposes the consequences of the NHS system which allows transsexuals to change their birth sex in their medical records.
The regular tests help the NHS spot problems early. Breast cancer screenings are thought to save 1,300 lives annually due to prompt treatment following early diagnosis.
Those who are not screened are more likely to develop advanced stages of cancer which is less easy to treat and is almost always fatal.
But transsexual health adviser Aedan Wolton said that smear tests could be uncomfortable for women who believe they are men, saying “it is often a procedure designed for women”.
Transsexuals who were born male but are registered as female with their GP will be routinely offered cervical cancer screenings, despite not having a cervix.
David Davies MP, who opposes Government plans to allow people to legally change their gender by self-declaration, criticised the guidance.
He said: “This NHS effort to be politically correct is putting the lives of women who claim to be men at risk.”
He added that it was “wasting the time of men who claim to be women by offering them tests for organs they do not have”.
Laura Perrins, Co-Editor of The Conservative Woman, said: “We’ve now got to the point where state collusion with this transgender agenda is endangering the health of women.
“It’s a ludicrous use of NHS resources to invite men for a cervical smear test, while it’s immoral and dangerous not to invite women.”