Screening, graded
A screening test is graded on one question: does detecting this, in people without symptoms, change outcomes after harms are counted? Every test is read on the same five axes, and harms count inside the grade. Screening is a comparison, never a leaderboard: which test fits depends on the risk in front of you, not on a rank.
Whole-body MRI screening
D+Detection is real; outcome evidence is absent, and about 1 in 3 scans flags something. The harm ledger decides this grade.
Read the graded test →
The coronary plaque ladder
BC-Rung 1, the calcium score (grade B), counts calcified plaque only. Rung 2, CCTA with AI plaque analysis (grade C-), sees soft plaque too, at a real price in harms and dollars, with outcome proof still missing in people without symptoms.
Read the ladder →
More tests (DEXA body composition, glucose monitors for people without diabetes) are graded and added as their pages land.
Grades are research summaries, not medical advice. Decisions about your own stack belong with your clinician.
These pages grade a test in people without symptoms, as a population question. They never grade a reader, and they cannot read your result.
Last reviewed October 18, 2026