Try asking a doctor for asymptomatic screening (for anything), they usually say "There's a schedule for such screenings at age X, you're too young for that. There's also proven negative effects of excessive screenings."
Which kinda makes sense, as they supposed to have protocols/schedules for all kinds of healthcare. We're talking here about changing that protocols/schedules. But doctors (and insurances) are generally reluctant.
So my actionable question is "How do I convince my doctor to get the screening?"