Login to pre-fill your information. Registering also provides access to the results history for you and your dependents."
Why do we need the patient's birth sex?
A significant number of tests require your birth sex in order for your doctor to interpret your results correctly. By changing your birth sex your results may be interpreted incorrectly and therefore you may receive inappropriate treatment. Your birth sex is only used for your medical tests and does not affect any other registrations, including Medicare.