B.T.
Hi N., some kids seem to sail through this with no problem while others need to be sedated. A catheter is no fun, but for a boy it is pretty easy to do, and it will be over quickly. You can ask about sedation if you would like to, but usually they just do it without.
Good luck with everything, you are right that it is rare for boys to get UTIs. It is common practice for the doctor to order this set of tests when a little one has a uti, especially a boy.