It's a medical product used to test for type 2 diabetes (oral glucose tolerance test/OGTT)

PSA sucks, it has both low sensitivity and low specificity.

Omfg, don't get a PET-scan 'just because'. You would literally have to be injected with radioactive particles. The other stuff, while not necessary, will atleast not kill you faster.

Last paragraph is also massively oversimplified. Getting a 'you have cancer'-speech and treatment for a superslow growing prostatecancer will fuck with your mind and body more than the cancer itself. That's why most health care systems advise against general PSA screening.

It's a valid strategy to ask the patient to recap what brings them to the clinic. It's very common to hear a different story from the one in the booking system or in the medical history. I'm not sure about the system were you live but medical history often takes waaaaaaaaaay more than 2 min to read up on. Maybe the last visit was recorded and had yet to been transcribed? Those can be a pain to listen to. It feels very reasonable that the doctor didn't have time to read up on your history if they were covering for a sick/unavailable colleague.

I would 100% prefer a doctor that is upfront about not knowing my medical history over a (more commonly occurring) dumbass pretenting to know it.

It's regrettable that your doctor made you feel neglected. Fault them for that, not the questions.

Edit: *recorded as in dictated!