re: Full body cancer scans

Neither the Real world positive predictive value (% of positives that are true positives and not false positives) nor sensitivity to detect early stage (curable) cancer of the Galleri (grail) test is good. About 55% of positive test results are false positives and about 55% of people with stage I-III cancers tested negative.

This % of false positives and false negatives is too high to endorse its use in my opinion. Both have significant costs to the patient.

I think early detection testing will get there one day but it’s not there yet.