What I don't understand is why there is an expectation that you take this test, anyway? So what if you did have a personality disorder? A personality disorder does not mean that you aren't of your right mind or don't know your gender. The usefulness of this type of testing would be more for therapy itself as people with these diagnoses may struggle more in their social relationships, work, etc., due to their perceptions of the world. So, yeah, testing to help you navigate your relationships/work life, but I don't understand why this test would be useful in determining if one is clear on their gender or not.
Perhaps these tests are given as a matter of course along with other tests that would make more sense to take. Meaning, a test package, so to speak?
Try not to stress too much, I am sure, as others have said, it will be taken in context. If the test shows that you have a higher level of conscious of others around you, for eample, that can easily be explained away by your situation (being trans* in a transphobic society). This probably a common result they see. Plus, a decent therapist should be able to determine that versus true paranoia with a simple conversation with a person.