Hi doctors. i am making an appointment with a urologist because of frequent urination especially at night. what procedures or tests can i expect at the appointment? will there be a second appointment? should i fast for the appointment?

I would relax and save your questions for the doc. Write down all your related symptoms and the time involved + any prior testing or treatments. The doc may rely on prior tests/order new ones, based on the visit. Other tests or visits would depend on what is/is not found.

As mentioned, we cannot predict the interaction with your new urologist, but the most likely diagnosis at your age is benign prostatic hypertrophy. An exam could include a rectal evaluation and even an ultrasound. A PSA blood test would likely be ordered. An electronic urinary flow measurement may be useful. No need to fast, but would be hydrated.