No. Medical certification is not required to change the gender options on your TSA PreCheck® application. If you are a member of the TSA PreCheck® Application Program, you may request a gender data update through the enrollment provider you initially applied with. Click here to find contact details for all enrollment providers or to look up your enrollment provider. Please note, updating your gender is not required to receive TSA PreCheck® screening. You are eligible to receive TSA PreCheck® screening even if your current gender differs from the gender you provided when you enrolled in TSA PreCheck®, as long as the name and date of birth on your reservation match the name and date of birth on record with TSA.