(Headed paper with full mailing address of PCP, Psychiatrist or consultant.)
Medical Reference No.
To whom it may concern.
This is to confirm that my patient [insert name], formerly known as [insert birth name], is currently undergoing treatment for gender reassignment to the [insert target gender] role.
This change of sex is permanent and your assistance in making the relevant changes to your records and in preserving full confidentiality would be appreciated.
PCP or Consultants signature