I got bad news about the specificity for most things this serious. Think the only one we absolutely nail is infectious disease detection.

Spoilers: It's anywhere between 1-15 and 5-30% for false positives and 1-15/5-40 for false negatives. That's imaging, biomarkers, cancer screenings, etc

Like, where do you think the concept of "second opinions" came from? Whimsy? Lets go ask a second doctor if I actually have cancer, it'll be fun!